Answer
$1$
Work Step by Step
$log_3(x+8)+log_3x=2$,
$log_3[(x+8)(x)]=2$,
$x^2+8x=3^2$,
$x^2+8x-9=0$,
$(x-1)(x+9)=0$,
$x=-9, 1$, check, only $x=1$ fits.
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0-32193-104-1
ISBN 13:
978-0-32193-104-7
Chapter 7 - Applications of Trigonometric Functions - Cumulative Review - Page 581: 13
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