Answer
$x=2\log 7\approx 1.69 $
Work Step by Step
First apply logarithm and the exponent rule:
$0.5x\log 10= \log 7$
Then, solve:
$x=\frac{\log 7}{0.5}=2\log 7\approx 1.69 $
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 12 - Section 12.8 - Exponential and Logarithmic Equations and Problem Solving - Exercise Set - Page 898: 60
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