Answer
-3
Work Step by Step
From the given table we see that the value of $f(1)$ is $1$.
From the given table we see that the value of $f(-1)$ is $4$.
$f(1)-f(-1)=1-4=-3$
Finite Math and Applied Calculus (6th Edition)
by Waner, Stefan; Costenoble, Steven
Published by
Brooks Cole
ISBN 10:
1133607705
ISBN 13:
978-1-13360-770-0
Chapter 1 - Section 1.1 - Functions from the Numerical, Algebraic, and Graphical Viewpoints - Exercises - Page 52: 4a
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