Answer
$3$
Work Step by Step
According to the graph:
$(f\circ f)(-1)=f(f(-1))=f(0)=3$
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 3 - Summary, Review, and Test - Cumulative Review Exercises (Chapters 1-3) - Page 440: 4
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