Answer
(-2,1)
Work Step by Step
The interval for the decreasing f is the range of x values where the graph is slanted downward in a northwest to southwest orientation.
College Algebra (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-32178-228-3
ISBN 13:
978-0-32178-228-1
Chapter 8 - Summary, Review, and Test - Review Exercises - Page 788: 3
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