Answer
$3^4$
Work Step by Step
$81 = 3 \times 3 \times 3 \times 3 = 3^4$
Prealgebra (7th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321955048
ISBN 13:
978-0-32195-504-3
Chapter 6 - Section 6.3 - Proportions and Problem Solving - Exercise Set - Page 438: 52
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