Precalculus (6th Edition) Blitzer

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

Chapter 7 - Cumulative Review Exercises - Page 879: 5

Answer

$ f\left( -0.7 \right)$ is positive

Work Step by Step

In the graph, we know the function is increasing in the interval $\left( -2,0 \right)$. At $ x=-1$, $ f\left( x \right)=0$ Therefore, it will move up as the value of x increases. Thus, at $ x=-0.7$, the value of $ f\left( -0.7 \right)$ will be positive.
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