Calculus: Early Transcendentals 8th Edition

Published by Cengage Learning
ISBN 10: 1285741552
ISBN 13: 978-1-28574-155-0

Chapter 1 - Section 1.4 - Exponential Functions - 1.4 Exercises - Page 54: 25

Answer

$f(24)=576 in$, which equates to 48 feet $g(24)=16777216 in$, which equates to 265 miles.

Work Step by Step

We are asked to find the height of two graphs using a given scale of 1 inch per coordinate box. We are asked to find the height at a distance of 2 feet from the origin, which would equate to 24 inches. Therefore, we must evaluate the functions at $x=24$. We are told that $f(x)=x^2$ and that $g(x)=2^x$ $$f(24)=576$$ $$g(24)=16777216$$ Using a conversion factor of 12 inches=1 foot, we can surmise that the height of $f(x)$ at $x=24$ is 48 feet, as we are told to prove in the beginning. Using a conversion factor of 63360 inches=1 mile, we can surmise that the height of $g(x)$ at $x=24$ is 265 miles, as we are asked to prove in the problem. Thus, we have shown the heights of each respective graph.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.