Answer
1.51
Work Step by Step
Using logarithms to solve this problem, we find:
$$ 6^{-4x} = 15 \\ log_6 15 =-4x \\ x = -.377$$
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 - 7.6 Exercises - Skill Practice - Page 520: 21
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