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

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. $P=3x$.

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