Calculus Concepts: An Informal Approach to the Mathematics of Change 5th Edition

by LaTorre, Donald R.; Kenelly, John W.; Reed, Iris B.; Carpenter, Laurel R.; Harris, Cynthia R.

Published by Brooks Cole

ISBN 10: 1-43904-957-2

ISBN 13: 978-1-43904-957-0

Chapter 1 - Ingredients of Change: Functions and Limits - 1.2 Activities - Page 20: 8

Answer

$a)$ By observation, the graph is increasing for all values of t $b)$ The graph changes concavity at $t\approx6 $ . And the graph is concave up for $0\leq t \lt6$ and concave down for the rest of values of $t$.

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