Answer
$81$
Work Step by Step
An exponent of $4$ means that 3 will be multiplied by itself four times:
$3^{4}=3\times 3 \times 3\times 3=81$
Elementary Algebra
by Kaufmann, Jerome; Schwitters, Karen;
Published by
Cengage Learning
ISBN 10:
1285194055
ISBN 13:
978-1-28519-405-9
Chapter 4 - Proportions, Percents, and Solving Inequalities - Chapters 1-4 Cumulative Review Problem Set - Page 186: 21
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