Answer
$P=3x$.
Work Step by Step
The perimeter is $=P$.
The length of one side is $=x$.
$3$ times the length is $=3x$.
The perimeter is equal to $3$ times the length.
$P=3x$.
Precalculus (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0-32197-907-9
ISBN 13:
978-0-32197-907-0
Appendix A - Review - A.1 Algebra Essentials - A.1 Assess Your Understanding - Page A13: 136
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