Cristopher Lopez

Numerade Educator
Teacher

Biography

I love math and even if you don't...I can still help you understand it.

Education

Cristopher has not yet added their education credentials.

Educator Statistics

Numerade tutor for 4 years
22 Students Helped

Topics Covered

The Power of Algebraic Language: Unlocking Mathematical Potential
Mastering Equations and Inequalities: Your Guide to Mathematical Success
Understanding Complex Numbers: A Comprehensive Guide

Cristopher's Textbook Answer Videos

1

Cristopher's Quick Ask Videos

05:06
Prealgebra

1. The sum of two consecutive page numbers in a book is 349.
Find the page numbers. The page numbers are ___ and ____
2. An airplane travels 70 mph faster from Atlanta to For
Lauderdale than it travels on the return trip from Fort Lauderdale
to Atlanta. If it takes 3.3 hr from Atlanta to Fort Lauderdale and
4 hr for the return trip, determine the speed of each
trip.
A. The plane flies at __ mph from Atlanta to Fort
Lauderdale.
B. The plane flies at __ mph from Fort Lauderdale to
Atlanta.
3. A recreational court if four times as long as it is wide. If
the perimeter is 265 ft, find the dimensions of the court.
A. The with of the recreational court is ____
B. The length of the recreational court is ___

Cristopher Lopez
01:09
Prealgebra

Carlos is running 25 meters every 3 seconds and Darius is running 30 meters every 4 seconds. Complete a table for each boy up to at least 20 seconds. Use one set of coordinates to draw two graphs showing the proportional relationship between time and distance for each boy. Use the graphs to compare the two boys' speeds in two ways. Show and interpret the use of a horizontal and then a vertical reference line. Be sure to refer to the graphs in your explanation.

Cristopher Lopez
01:40
Geometry

In rectangle PQRS, PQ = x + 50, PR = 2x + 10, and SQ = 4x - 130. What is the length of PR?
F 70
G 90
H 120
J 150

Cristopher Lopez
00:41
Geometry

Mrs. Williams-Finch's old classroom was 20 x 20 square feet. The dimensions of her new classroom are 20 x 25 square feet. How much larger is Mrs. Williams-Finch's new classroom compared to her old classroom?

Cristopher Lopez
03:51
Prealgebra

Chapter 9.9 MODELING with QUADRATIC FUNCTIONS

PROBLEM #3
The sales for a gaming console for various years are listed in the table below.

Year | Sales (in billions of dollars)
1992 | 0.78
1994 | 0.38
1996 | 0.18
1998 | 0.44
1999 | 1.20

Let f(t) represent the sales (in billions of dollars) at t years since 1990. A reasonable model is f(t) = 0.065t^2 - 0.68t + 1.95
Use the model to predict when the sales will be $10 billion. You must show your work.

Cristopher Lopez
03:05
Geometry

10) NASA engineers designed an enlarged external fuel tank for the space shuttle (shown below). How much fuel can the tank hold? Show your work and round answers to the nearest 10th.

Cristopher Lopez
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