Answer
-2
Work Step by Step
From the graph we see that $f(4)=2$ and $f(2)=-2$, so:
$(f\circ f)(4)=f(f(4))=f(2)=-2$
College Algebra 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305115546
ISBN 13:
978-1-30511-554-5
Chapter 2, Functions - Section 2.7 - Combining Functions - 2.7 Exercises - Page 253: 38
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