Functions Modeling Change: A Preparation for Calculus, 5th Edition

Published by Wiley
ISBN 10: 1118583191
ISBN 13: 978-1-11858-319-7

Chapter 2 - Functions - Review Exercises and Problems for Chapter Two - Page 109: 9



Work Step by Step

To find $P(4)$, use $t=4$ with the formula. $$P(4)=170-4(4)=170-16=154$$ To find $P(2)$, use $t=2$ with the formula. $$P(2)=170-4(2)=170-8=162$$ Therefore, $$P(4)-P(2)=154-162=-8$$
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