Answer
$(-2,1)$
Work Step by Step
Based on the given graph, the interval on which $f$ is decreasing can be identified as $(-2,1)$
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter 10 - Cumulative Review Exercises - Page 1127: 3
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