Answer
$x=0.59$
Work Step by Step
Make each side a natural log, and pull down the exponent on the left side. Then divide to solve for $x$.
$10^x=3.91$
$x\ln(10)=\ln(3.91)$
$x=\frac{\ln(3.91)}{\ln(10)}$
$x=0.59$
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 4 - Exponential and Logarithmic Functions - Exercise Set 4.4 - Page 490: 23
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