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Prealgebra

Alan S. Tussy, R. David Gustafson, Diane R. Koenig

Chapter 7

Percent - all with Video Answers

Educators

Section 1

Percents, Decimals, and Fractions

00:51

Problem 1

Fill in the blanks.
____ means parts per one hundred.

Lourence Gonhovi
Lourence Gonhovi
Numerade Educator
00:40

Problem 2

Fill in the blanks.
The word percent is formed from the prefix per, which means ____ and the suffix cent , which comes from the Latin word centum, meaning ____ .

Benjamin Mallon
Benjamin Mallon
Numerade Educator
00:50

Problem 3

Fill in the blanks.
To write a percent as a fraction, drop the \% symbol end write the given number over____. Then ____ the fraction, if possible.

Benjamin Mallon
Benjamin Mallon
Numerade Educator
00:55

Problem 4

Fill in the blanks.
To write a percent as a decimal, drop the $\%$ symbol and divide the given number by 100 by moving the decimal point 2 places to the _____.

Benjamin Mallon
Benjamin Mallon
Numerade Educator
00:54

Problem 5

Fill in the blanks.
To write a decimal as a percent, multiply the decimal by 100 by moving the decimal point 2 places to the _____ and then insert a $\%$ symbol.

Benjamin Mallon
Benjamin Mallon
Numerade Educator
01:18

Problem 6

Fill in the blanks.
To write a fraction as a percent, first write the fraction as a _____. Then multiply the decimal by 100 by moving the decimal point 2 places to the right, and then insert a ______ symbol.

Benjamin Mallon
Benjamin Mallon
Numerade Educator
View

Problem 7

What does the symbol $\%$ mean?

Anecia Mcmurrin-Bala
Anecia Mcmurrin-Bala
Numerade Educator
00:44

Problem 8

Write the whole number 45 as a decimal.

Benjamin Mallon
Benjamin Mallon
Numerade Educator
02:27

Problem 9

What percent of the figure is shaded? What percent of the figure is not shaded? See Objective 1.
FIGURE CAN'T COPY.

Benjamin Mallon
Benjamin Mallon
Numerade Educator
01:47

Problem 10

What percent of the figure is shaded? What percent of the figure is not shaded? See Objective 1.
FIGURE CAN'T COPY.

Benjamin Mallon
Benjamin Mallon
Numerade Educator
01:55

Problem 11

In the following illustrations, each set of 100 square regions represents $100 \% .$ What percent is shaded?
FIGURE CAN'T COPY.

Benjamin Mallon
Benjamin Mallon
Numerade Educator
01:42

Problem 12

In the following illustrations, each set of 100 square regions represents $100 \% .$ What percent is shaded?
FIGURE CAN'T COPY.

Benjamin Mallon
Benjamin Mallon
Numerade Educator
01:17

Problem 13

THE INTERNET The following sentence appeared on a technology blog: "Ask Internet users what they want from their service and 99 times out of 100 the answer will be the same: more speed." According to the blog, what percent of the time do Internet users give that answer?

Benjamin Mallon
Benjamin Mallon
Numerade Educator
01:13

Problem 14

For Problems, see Example 1.
BASKETBALL RECORDS In $1962,$ Wilt Chamberlain of the Philadelphia Warriors scored a total of 100 points in an NBA game. If twenty-eight of his points came from made free throws, what percent of his point total came from free throws?

Benjamin Mallon
Benjamin Mallon
Numerade Educator
02:08

Problem 15

For Problems, see Example 1.
BASKETBALL RECORDS In $1962,$ Wilt Chamberlain of the Philadelphia Warriors scored a total of 100 points in an NBA game. If twenty-eight of his points came from made free throws, what percent of his point total came from free throws?

Benjamin Mallon
Benjamin Mallon
Numerade Educator
01:40

Problem 16

For Problems, see Example 1.
DIVISIBILITY Of the natural numbers from 1 through $100,$ only fourteen of them are divisible by 7.
a. What percent of the numbers are divisible by $7 ?$
b. What percent of the numbers are not divisible by $7 ?$

Benjamin Mallon
Benjamin Mallon
Numerade Educator
01:09

Problem 17

Write each percent as a fraction. Simplify, if possible. See Example 2 .
$$17 \%$$

Benjamin Mallon
Benjamin Mallon
Numerade Educator
00:52

Problem 18

Write each percent as a fraction. Simplify, if possible. See Example 2 .
$$31 \%$$

Benjamin Mallon
Benjamin Mallon
Numerade Educator
01:21

Problem 19

Write each percent as a fraction. Simplify, if possible. See Example 2 .
$$91 \%$$

Benjamin Mallon
Benjamin Mallon
Numerade Educator
00:55

Problem 20

Write each percent as a fraction. Simplify, if possible. See Example 2 .
$$89 \%$$

Benjamin Mallon
Benjamin Mallon
Numerade Educator
01:11

Problem 21

Write each percent as a fraction. Simplify, if possible. See Example 2 .
$$4 \%$$

Benjamin Mallon
Benjamin Mallon
Numerade Educator
01:08

Problem 22

Write each percent as a fraction. Simplify, if possible. See Example 2 .
$$5 \%$$

Benjamin Mallon
Benjamin Mallon
Numerade Educator
01:50

Problem 23

Write each percent as a fraction. Simplify, if possible. See Example 2 .
$$60 \%$$

Benjamin Mallon
Benjamin Mallon
Numerade Educator
01:27

Problem 24

Write each percent as a fraction. Simplify, if possible. See Example 2 .
$$40 \%$$

Benjamin Mallon
Benjamin Mallon
Numerade Educator
02:11

Problem 25

Write each percent as a fraction. Simplify, if possible. See Example 3 .
$$1.9 \%$$

Benjamin Mallon
Benjamin Mallon
Numerade Educator
01:54

Problem 26

Write each percent as a fraction. Simplify, if possible. See Example 3 .
$$2.3 \%$$

Benjamin Mallon
Benjamin Mallon
Numerade Educator
01:20

Problem 27

Write each percent as a fraction. Simplify, if possible. See Example 3 .
$$54.7 \%$$

Benjamin Mallon
Benjamin Mallon
Numerade Educator
01:16

Problem 28

Write each percent as a fraction. Simplify, if possible. See Example 3 .
$$97.1 \%$$

Benjamin Mallon
Benjamin Mallon
Numerade Educator
02:11

Problem 29

Write each percent as a fraction. Simplify, if possible. See Example 3 .
$$12.5 \%$$

Benjamin Mallon
Benjamin Mallon
Numerade Educator
01:54

Problem 30

Write each percent as a fraction. Simplify, if possible. See Example 3 .
$$62.5 \%$$

Benjamin Mallon
Benjamin Mallon
Numerade Educator
01:48

Problem 31

Write each percent as a fraction. Simplify, if possible. See Example 3 .
$$6.8 \%$$

Benjamin Mallon
Benjamin Mallon
Numerade Educator
01:44

Problem 32

Write each percent as a fraction. Simplify, if possible. See Example 3 .
$$4.2 \%$$

Benjamin Mallon
Benjamin Mallon
Numerade Educator
02:17

Problem 33

Write each percent as a fraction. Simplify, if possible. See Example 4.
$$1 \frac{1}{3} \%$$

Benjamin Mallon
Benjamin Mallon
Numerade Educator
01:50

Problem 34

Write each percent as a fraction. Simplify, if possible. See Example 4.
$$3 \frac{1}{3} \%$$

Benjamin Mallon
Benjamin Mallon
Numerade Educator
02:55

Problem 35

Write each percent as a fraction. Simplify, if possible. See Example 4.
$$14 \frac{1}{6} \%$$

Benjamin Mallon
Benjamin Mallon
Numerade Educator
02:55

Problem 36

Write each percent as a fraction. Simplify, if possible. See Example 4.
$$10 \frac{5}{6} \%$$

Benjamin Mallon
Benjamin Mallon
Numerade Educator
00:56

Problem 37

Write each percent as a fraction. Simplify, if possible. See Example 5 .
$$130 \%$$

Benjamin Mallon
Benjamin Mallon
Numerade Educator
01:17

Problem 38

Write each percent as a fraction. Simplify, if possible. See Example 5 .
$$160 \%$$

Benjamin Mallon
Benjamin Mallon
Numerade Educator
01:02

Problem 39

Write each percent as a fraction. Simplify, if possible. See Example 5 .
$$220 \%$$

Benjamin Mallon
Benjamin Mallon
Numerade Educator
01:12

Problem 40

Write each percent as a fraction. Simplify, if possible. See Example 5 .
$$240 \%$$

Benjamin Mallon
Benjamin Mallon
Numerade Educator
02:01

Problem 41

Write each percent as a fraction. Simplify, if possible. See Example 5 .
$$0.35 \%$$

Benjamin Mallon
Benjamin Mallon
Numerade Educator
01:50

Problem 42

Write each percent as a fraction. Simplify, if possible. See Example 5 .
$$0.45 \%$$

Benjamin Mallon
Benjamin Mallon
Numerade Educator
02:02

Problem 43

Write each percent as a fraction. Simplify, if possible. See Example 5 .
$$0.25 \%$$

Benjamin Mallon
Benjamin Mallon
Numerade Educator
02:12

Problem 44

Write each percent as a fraction. Simplify, if possible. See Example 5 .
$$0.75 \%$$

Benjamin Mallon
Benjamin Mallon
Numerade Educator
00:15

Problem 45

Write each percent as a decimal. See Objective 3 .
$$16 \%$$

Brandon Fox
Brandon Fox
Numerade Educator
00:36

Problem 46

Write each percent as a decimal. See Objective 3 .
$$11 \%$$

Victor Salazar
Victor Salazar
Numerade Educator
00:36

Problem 47

Write each percent as a decimal. See Objective 3 .
$$81 \%$$

Victor Salazar
Victor Salazar
Numerade Educator
00:36

Problem 48

Write each percent as a decimal. See Objective 3 .
$$93 \%$$

Victor Salazar
Victor Salazar
Numerade Educator
00:50

Problem 49

Write each percent as a decimal. See Example $6 .$
$$34.12 \%$$

Julie Silva
Julie Silva
Numerade Educator
00:50

Problem 50

Write each percent as a decimal. See Example $6 .$
$$27.21 \%$$

Julie Silva
Julie Silva
Numerade Educator
00:36

Problem 51

Write each percent as a decimal. See Example $6 .$
$$50.033 \%$$

Julie Silva
Julie Silva
Numerade Educator
00:36

Problem 52

Write each percent as a decimal. See Example $6 .$
$$40.083 \%$$

Julie Silva
Julie Silva
Numerade Educator
00:36

Problem 53

Write each percent as a decimal. See Example $6 .$
$$6.99 \%$$

Julie Silva
Julie Silva
Numerade Educator
00:08

Problem 54

Write each percent as a decimal. See Example $6 .$
$$4.77 \%$$

Michelle Nguyen
Michelle Nguyen
Numerade Educator
00:52

Problem 55

Write each percent as a decimal. See Example $6 .$
$$1.3 \%$$

Shahab Ullah
Shahab Ullah
Numerade Educator
00:14

Problem 56

Write each percent as a decimal. See Example $6 .$
$$8.6 \%$$

Lily An
Lily An
Numerade Educator
01:24

Problem 57

Write each percent as a decimal. See Example 7.
$$7 \frac{1}{4} \%$$

Debasish Das
Debasish Das
Numerade Educator
00:09

Problem 58

Write each percent as a decimal. See Example 7.
$$9 \frac{3}{4} \%$$

James Kiss
James Kiss
Numerade Educator
00:16

Problem 59

Write each percent as a decimal. See Example 7.
$$18 \frac{1}{2} \%$$

Brandon Fox
Brandon Fox
Numerade Educator
00:16

Problem 60

Write each percent as a decimal. See Example 7.
$$25 \frac{1}{2} \%$$

Brandon Fox
Brandon Fox
Numerade Educator
00:28

Problem 61

Write each percent as a decimal. See Example 8 .
$$460 \%$$

Emily Himsel
Emily Himsel
Numerade Educator
00:44

Problem 62

Write each percent as a decimal. See Example 8 .
$$230 \%$$

Victor Salazar
Victor Salazar
Numerade Educator
00:28

Problem 63

Write each percent as a decimal. See Example 8 .
$$316 \%$$

Emily Himsel
Emily Himsel
Numerade Educator
00:28

Problem 64

Write each percent as a decimal. See Example 8 .
$$178 \%$$

Emily Himsel
Emily Himsel
Numerade Educator
00:29

Problem 65

Write each percent as a decimal. See Example 8 .
$$0.5 \%$$

Emily Himsel
Emily Himsel
Numerade Educator
00:28

Problem 66

Write each percent as a decimal. See Example 8 .
$$0.9 \%$$

Emily Himsel
Emily Himsel
Numerade Educator
00:29

Problem 67

Write each percent as a decimal. See Example 8 .
$$0.03 \%$$

Emily Himsel
Emily Himsel
Numerade Educator
01:06

Problem 68

Write each percent as a decimal. See Example 8 .
$$0.06 \%$$

Debasish Das
Debasish Das
Numerade Educator
00:09

Problem 69

Write each decimal or whole number as a percent. See Example 9 .
$$0.362$$

Brandon Fox
Brandon Fox
Numerade Educator
00:54

Problem 70

Write each decimal or whole number as a percent. See Example 9 .
$$0.245$$

Heather Zimmers
Heather Zimmers
Numerade Educator
00:09

Problem 71

Write each decimal or whole number as a percent. See Example 9 .
$$0.98$$

Brandon Fox
Brandon Fox
Numerade Educator
00:09

Problem 72

Write each decimal or whole number as a percent. See Example 9 .
$$0.57$$

James Kiss
James Kiss
Numerade Educator
00:09

Problem 73

Write each decimal or whole number as a percent. See Example 9 .
$$1.71$$

Brandon Fox
Brandon Fox
Numerade Educator
00:54

Problem 74

Write each decimal or whole number as a percent. See Example 9 .
$$4.33$$

Heather Zimmers
Heather Zimmers
Numerade Educator
01:12

Problem 75

Write each decimal or whole number as a percent. See Example 9 .
$$4$$

Shahab Ullah
Shahab Ullah
Numerade Educator
00:09

Problem 76

Write each decimal or whole number as a percent. See Example 9 .
$$9$$

Brandon Fox
Brandon Fox
Numerade Educator
01:08

Problem 77

Write each fraction as a percent. See Example 10 .
$$\frac{2}{5}$$

Benjamin Mallon
Benjamin Mallon
Numerade Educator
00:15

Problem 78

Write each fraction as a percent. See Example 10 .
$$\frac{1}{5}$$

James Kiss
James Kiss
Numerade Educator
02:02

Problem 79

Write each fraction as a percent. See Example 10 .
$$\frac{4}{25}$$

Benjamin Mallon
Benjamin Mallon
Numerade Educator
00:51

Problem 80

Write each fraction as a percent. See Example 10 .
$$\frac{9}{25}$$

Shahab Ullah
Shahab Ullah
Numerade Educator
00:56

Problem 81

Write each fraction as a percent. See Example 10 .
$$\frac{5}{8}$$

Shahab Ullah
Shahab Ullah
Numerade Educator
00:38

Problem 82

Write each fraction as a percent. See Example 10 .
$$\frac{3}{8}$$

Julie Silva
Julie Silva
Numerade Educator
01:02

Problem 83

Write each fraction as a percent. See Example 10 .
$$\frac{7}{16}$$

Shahab Ullah
Shahab Ullah
Numerade Educator
00:51

Problem 84

Write each fraction as a percent. See Example 10 .
$$\frac{9}{16}$$

Shahab Ullah
Shahab Ullah
Numerade Educator
00:28

Problem 85

Write each fraction as a percent. See Example 11 .
$$\frac{9}{4}$$

James Kiss
James Kiss
Numerade Educator
00:28

Problem 86

Write each fraction as a percent. See Example 11 .
$$\frac{11}{4}$$

James Kiss
James Kiss
Numerade Educator
00:54

Problem 87

Write each fraction as a percent. See Example 11 .
$$\frac{21}{20}$$

Shahab Ullah
Shahab Ullah
Numerade Educator
00:28

Problem 88

Write each fraction as a percent. See Example 11 .
$$\frac{33}{20}$$

James Kiss
James Kiss
Numerade Educator
00:26

Problem 89

Write each fraction as a percent. Give the exact answer and an approximation to the nearest tenth of one percent. See Example 12 .
$$\frac{1}{6}$$

Yingtai Xiao
Yingtai Xiao
Numerade Educator
00:22

Problem 90

Write each fraction as a percent. Give the exact answer and an approximation to the nearest tenth of one percent. See Example 12 .
$$\frac{2}{9}$$

Yingtai Xiao
Yingtai Xiao
Numerade Educator
00:15

Problem 91

Write each fraction as a percent. Give the exact answer and an approximation to the nearest tenth of one percent. See Example 12 .
$$\frac{5}{3}$$

James Kiss
James Kiss
Numerade Educator
00:26

Problem 92

Write each fraction as a percent. Give the exact answer and an approximation to the nearest tenth of one percent. See Example 12 .
$$\frac{4}{3}$$

Yingtai Xiao
Yingtai Xiao
Numerade Educator
01:11

Problem 93

Complete the table. Give an exact answer and an approximation to the nearest tenth of one percent when necessary. Round decimals to the nearest hundredth when necessary.
TABLE CAN'T COPY.

Amy Jiang
Amy Jiang
Numerade Educator
01:11

Problem 94

Complete the table. Give an exact answer and an approximation to the nearest tenth of one percent when necessary. Round decimals to the nearest hundredth when necessary.
TABLE CAN'T COPY.

Amy Jiang
Amy Jiang
Numerade Educator
01:11

Problem 95

Complete the table. Give an exact answer and an approximation to the nearest tenth of one percent when necessary. Round decimals to the nearest hundredth when necessary.
TABLE CAN'T COPY.

Amy Jiang
Amy Jiang
Numerade Educator
01:11

Problem 96

Complete the table. Give an exact answer and an approximation to the nearest tenth of one percent when necessary. Round decimals to the nearest hundredth when necessary.
TABLE CAN'T COPY.

Amy Jiang
Amy Jiang
Numerade Educator
01:11

Problem 97

Complete the table. Give an exact answer and an approximation to the nearest tenth of one percent when necessary. Round decimals to the nearest hundredth when necessary.
TABLE CAN'T COPY.

Amy Jiang
Amy Jiang
Numerade Educator
01:11

Problem 98

Complete the table. Give an exact answer and an approximation to the nearest tenth of one percent when necessary. Round decimals to the nearest hundredth when necessary.
TABLE CAN'T COPY.

Amy Jiang
Amy Jiang
Numerade Educator
01:11

Problem 99

Complete the table. Give an exact answer and an approximation to the nearest tenth of one percent when necessary. Round decimals to the nearest hundredth when necessary.
TABLE CAN'T COPY.

Amy Jiang
Amy Jiang
Numerade Educator
01:11

Problem 100

Complete the table. Give an exact answer and an approximation to the nearest tenth of one percent when necessary. Round decimals to the nearest hundredth when necessary.
TABLE CAN'T COPY.

Amy Jiang
Amy Jiang
Numerade Educator
01:21

Problem 101

THE RED CROSS A fact sheet released by the American Red Cross in 2008 stated, "An average of 91 cents of every dollar donated to the Red Cross is spent on services and programs." What percent of the money donated to the Red Cross went to services and programs?

Raia Ottenheimer
Raia Ottenheimer
Numerade Educator
00:31

Problem 102

SAVING MONEY According to an article on the CNN website, in 1970 Americans saved 14 cents out of every dollar earned. (Source: CNN.com/living, May $21,2009$ )
a. Express the amount saved for every dollar carned as a fraction in simplest form.
b. Write your answer to part a as a percent.

Deborah Ferry
Deborah Ferry
Numerade Educator
04:23

Problem 103

REGIONS OF THE COUNTRY The continental United States is divided into seven regions as shown below.
a. What percent of the 50 states are in the Rocky Mountain region?
b. What percent of the 50 states are in the Midwestern region?
c. What percent of the 50 states are not located in any of the seven regions shown here?
FIGURE CAN'T COPY.

Sarah X
Sarah X
Numerade Educator
01:06

Problem 104

ROAD SIGNS Sometimes, signs like that shown below are posted to warn truckers when they are approaching a steep grade on the highway.
a. Write the grade shown on the sign as a fraction.
b. Write the grade shown on the sign as a decimal.

Nick Johnson
Nick Johnson
Numerade Educator
00:19

Problem 105

INTEREST RATES Write each interest rate for the following accounts as a decimal.
a. Home loan: $7.75 \%$
b. Savings account: $5 \%$
c. Credit card: $14.25 \%$

Kayla Scholl
Kayla Scholl
Numerade Educator
00:26

Problem 106

DRUNK DRIVING In most states, it is illegal to drive with a blood alcohol concentration of $0.08 \%$ or higher.
a. Write this percent as a fraction. Do not simplify.
b. Use your answer to part a to fill in the blanks: A blood alcohol concentration of $0.08 \%$ means ____ parts alcohol to ____ parts blood.

Sarah Wharton
Sarah Wharton
Numerade Educator
03:26

Problem 107

HUMAN SKIN The illustration below shows what percent of the total skin area that each section of the body covers. Find the missing percent for the torso, and then complete the bar graph. (Source: Burn Center at Sherman Oaks Hospital, American Medical Assn. Encyclopedia of Medicine)
FIGURE CAN'T COPY.

Mariana Roldan
Mariana Roldan
Numerade Educator
02:10

Problem 108

RAP MUSIC The table below shows what percent rap/hip-hop music sales were of total U.S. dollar sales of recorded music for the years $2001-2007$ Use the data to construct a line graph.
GRAPH CAN'T COPY.

Sarah Brown
Sarah Brown
Numerade Educator
03:34

Problem 109

THE U.N. SECURITY COUNCIL The United Nations has 192 members. The United States, Russia, the United Kingdom, France, and China, along with ten other nations, make up the Security Council. (Source: The World Almanac and Book of Facts, 2009)
a. What fraction of the members of the United Nations belong to the Security Council? Write your answer in simplest form.
b. Write your answer to part a as a decimal. (Hint: Divide to six decimal places. The result is a terminating decimal.)
c. Write your answer to part b as a percent.

Sanchit Jain
Sanchit Jain
Numerade Educator
02:56

Problem 110

SOAP Ivory soap claims to be $99 \frac{44}{100} \%$ pure. Write this percent as a decimal.

Lourence Gonhovi
Lourence Gonhovi
Numerade Educator
02:27

Problem 111

LOGOS In the illustration, what part of the company's logo is shaded red? Express your answer as a percent (exact), a fraction, and a decimal (using an overbar).
FIGURE CAN'T COPY.

Benjamin Mallon
Benjamin Mallon
Numerade Educator
02:24

Problem 112

THE HUMAN SPINE The human spine consists of a group of bones (vertebrae) as shown.
a. What fraction of the vertebrae are lumbar?
b. What percent of the vertebrae are lumbar? (Round to the nearest one percent.)
c. What percent of the vertebrae are cervical? (Round to the nearest one percent.)
FIGURE CAN'T COPY.

Qudsiya Anis
Qudsiya Anis
Numerade Educator
00:59

Problem 113

BOXING Oscar De La Hoya won 39 out of 45 professional fights.
a. What fraction of his fights did he win?
b. What percent of his fights did he win? Give the exact answer and an approximation to the nearest tenth of one percent.

Stephen Russell
Stephen Russell
Numerade Educator
02:24

Problem 114

MAJOR LEAGUE BASEBALL In 2008 , the Milwaukee Brewers won 90 games and lost 72 during the regular season.
a. What was the total number of regular season games that the Brewers played in $2008 ?$
b. What percent of the games played did the Brewers win in $2008 ?$ Give the exact answer and an approximation to the nearest tenth of one percent.

Rupsa Sarkar
Rupsa Sarkar
Numerade Educator
06:19

Problem 115

ECONOMIC FORECASTS One economic indicator of the national economy is the number of orders placed by manufacturers. One month, the number of orders rose one-fourth of 1 percent.
a. Write this using a \% symbol.
b. Express it as a fraction.
c. Express it as a decimal.

Srikar Katta
Srikar Katta
Numerade Educator
00:20

Problem 116

TAXES In August of 2008 , Springfield, Missouri, voters approved a one-eighth of one percent sales tax to fund transportation projects in the city.
a. Write the percent as a decimal.
b. Write the percent as a fraction.

Angela Guo
Angela Guo
Numerade Educator
00:47

Problem 117

BIRTHDAYS If the day of your birthday represents $\frac{1}{365}$ of a year, what percent of the year is it? Round to the nearest hundredth of a percent.

Steven Clarke
Steven Clarke
Numerade Educator
02:04

Problem 118

POPULATION As a fraction, each resident of the United States represents approximately $\frac{1}{305,000,0000}$ of the U.S. population. Express this as a percent. Round to one nonzero digit.

Harsh Gadhiya
Harsh Gadhiya
Numerade Educator
00:40

Problem 119

If you were writing advertising, which form do you think would attract more customers: "$25 \%$ off" or " $\frac{1}{4}$ off "? Explain your reasoning.

Charles Carter
Charles Carter
Numerade Educator
01:01

Problem 120

Many coaches ask their players to give a $110 \%$ effort during practices and games. What do you think this means? Is it possible?

James Kiss
James Kiss
Numerade Educator
00:37

Problem 121

Explain how an amusement park could have an attendance that is $103 \%$ of capacity.

James Kiss
James Kiss
Numerade Educator
01:45

Problem 122

WON-LOST RECORDS In sports, when a team wins as many games as it loses, it is said to be playing "500 ball." Suppose in its first 40 games, a team wins 20 games and loses 20 games. Use the concepts in this section to explain why such a record could be called "500 ball."

Andrija Isakov
Andrija Isakov
Numerade Educator
00:55

Problem 123

The width of a rectangle is 6.5 centimeters and its length is 10.5 centimeters.
a. Find its perimeter.
b. Find its area.

Supratim Roy
Supratim Roy
Numerade Educator
00:30

Problem 124

The length of a side of a square is 9.8 meters.
a. Find its perimeter.
b. Find its area.

Ashley High
Ashley High
Numerade Educator