Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 11 - Section 11.1 - Finding Limits Using Tables and Graphs - Exercise Set - Page 1140: 68


$124\ ft$

Work Step by Step

Step 1. Based on the given table, we can find $\lim_{x\to60}f(x)=124\ ft$, which means that at a speed of $60\ mi/h$, you should keep a distance of $124\ ft$ from the car in front of you. Step 2. We evaluate $f(60)=0.015(60)^2+(60)+10=124\ ft$, which agrees with the limit obtained above.
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