Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 2 - Section 2.2 - Graphs of Functions - Exercise Set - Page 125: 72



Work Step by Step

$l=3w+8$ $P=624$ Also, $P=2w+2l$ Solve for w by substitution. $P=2w+2(3w+8)$ $P=2w+6w+16$ $P=8w+16$ Use the information that $P=624$. $624=8w+16$ $608=8w$ $76=w$ Plugin your value for $w$ into the information about $l$. $l=3(76)+8=228+8=236$ $76\times236$
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