Answer
$x=2$
Work Step by Step
$(-7)^{x}=49$
$(-7)^{x}=(-7)^{2}$
$x=2$
Check:
$(-7)^{2}4\overset{?}{=}9$
$49=49$.
Intermediate Algebra: Connecting Concepts through Application
by Clark, Mark; Anfinson, Cynthia
Published by
Brooks Cole
ISBN 10:
0-53449-636-9
ISBN 13:
978-0-53449-636-4
Chapter 5 - Exponential Functions - 5.2 Solving Equations Using Exponent Rules - 5.2 Exercises - Page 437: 22
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