Charles P. McKeague
ISBN #9780495559917
6th Edition
4,875 Questions
Homework Questions
Prealgebra is a comprehensive textbook that bridges foundational algebraic concepts with real-world applications in areas such as finance, science, and engineering. The book methodically introduces essential topics—from variables and expressions to more advanced techniques like solving complex equations, optimizing functions, and understanding geometric computations—demonstrating how mathematical models can be applied to everyday scenarios. By emphasizing precise formula selection, accurate substitution, and unit verification, Prealgebra not only strengthens core problem-solving skills but also prepares students for advanced studies and practical decision-making.
Chapter 1
Whole Numbers
Chapter 2
Introduction to Algebra
Chapter 3
Fractions and Mixed Numbers
Chapter 4
Solving Equations
Chapter 5
Decimals
Chapter 6
Ratio and Proportion
Chapter 7
Percent
Chapter 8
Measurement
Chapter 9
Exponents and Polynomials
Problem 1
Round each of the numbers to the nearest ten. $$680$$
Sheryl Ezze Numerade Educator
Problem 2
Round each of the numbers to the nearest thousand. $$4,670$$
Christy Galilei Numerade Educator
Problem 3
Pat is 20 years older than his son Patrick. In 2 years, the sum of their ages will be $90 .$ How old are they now? $$\begin{array}{|l|l|} \hline \text { } & \hline \text { Now } & \text { In 2 Years } \\ \hline \text { Patrick } & x & \\ \hline \text { Pat } & & \\ \hline \end{array}$$
Ashley High Numerade Educator
Problem 4
Recently, the Texas Junior College Teachers Association annual conference was held in Austin. At that time a taxi ride in Austin was $\$ 1.25$ for the first $\frac{1}{5}$ of a mile and $\$ 0.25$ for each additional $\frac{1}{5}$ of a mile. The charge for a taxi to wait is $\$ 12.00$ per hour. Use this information for Problems 63 through 66. If the distance from one of the convention hotels to the airport is 7.5 miles, how much will it cost to take a taxi from that hotel to the airport?
Problem 5
Hourly Wages Jane takes a job at the local Marcy's department store. Her job pays $\$ 8.00$ per hour. The graph shows how much Jane earns for working from 0 to 40 hours in a week. a. List three ordered pairs that lie on the line graph. b. How much will she earn for working 40 hours? c. If her check for one week is $\$ 240,$ how many hours did she work? d. She works 35 hours one week, but her paycheck before deductions are subtracted out is for $\$ 260 .$ Is this correct? Explain (GRAPH CANT COPY)
Tyra Elliott Numerade Educator
Problem 6
Write each number in standard form. $$6.25 \times 10^{-4}$$
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