Answer
{$-2$}
Work Step by Step
Step 1: $3^{x}=\frac{1}{9}$
Step 2: $3^{x}=9^{-1}$
Step 3: $3^{x}=(3^{2})^{-1}$
Step 4: $3^{x}=3^{-2}$
Step 5: $x=-2$
Therefore, the solution set is {$-2$}.
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 - Review - Page 908: 99
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