Answer
$P(x)=6x$, linear
Work Step by Step
Step 1. We can write the perimeter as $P(x)=2(x+2x)=6x$, ($x\gt0$)
Step 2. We can see that $P(x)$ is a linear function of $x$.
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
013421742X
ISBN 13:
978-0-13421-742-0
Chapter 2 - Graphs and Functions - Chapter 2 Test Prep - Review Exercises - Page 300: 128
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