Answer
$x =3 $
Work Step by Step
$5(2^{x}) = 40$
$2^{x} = 8$
$2^{x} = 2^{3}$
$x = 3$
Check:
$ 5(2^{3})$
$= 5(8)$
$= 40$
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 438: 43
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