Answer
.155
Work Step by Step
Since there is a variable in the exponent on one side of the equation, we use logarithms. Doing this, we find:
$$ 9x = log_7 (15) \\ x =\frac{log_7(15)}{9} \\ x=.155$$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 7 Exponential and Logarithmic Functions - 7.6 Solve Exponential and Logarithmic Equations - Guided Practice for Examples 2 and 3 - Page 516: 5
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