Answer
$x \approx 9.002$
Work Step by Step
$604(0.4)^{x} = 0.158$
$0.4^{x} = \frac{0.158}{604}$
$x = \log_{0.4} {\frac{0.158}{604}}$
by GDC / calculator
$x = 9.0023...$
$x \approx 9.002$
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 6 - Logarithmic Functions - 6.5 Solving Exponential Equations - 6.5 Exercises - Page 526: 17
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