College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter 4, Exponential and Logarithmic Functions - Chapter 4 Review - Concept Check - Page 425: 71


$x=-\frac{3\log 0.63}{2\log 5}\approx 0.430618$

Work Step by Step

$5^{-2x/3}=0.63$ $\log(5^{-2x/3})=\log 0.63$ $\frac{-2x}{3}\log 5=\log 0.63$ $x=-\frac{3\log 0.63}{2\log 5}\approx 0.430618$
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