Algebra 2 (1st Edition)

by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee

Published by McDougal Littell

ISBN 10: 0618595414

ISBN 13: 978-0-61859-541-9

Chapter 2 Linear Equations and Functions - Chapter Test - Page 145: 26

Answer

See below.

Work Step by Step

If the variables vary directly, then $p=at$ for some constant $a$. Plugging in the given values, here $0.5=a\cdot2.5\\a=0.2$. Thus the equation is: $p=0.2t$. Thus if $t=20$, then $p=0.2(20)=4$

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