Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter P - Section P.8 - Modeling with Equations - Concept and Vocabulary Check - Page 121: 6


Fill the blanks with: $ x+5$, $4x+10$ $ x^{2}+5x $

Work Step by Step

The length of a rectangle is 5 feet more than $ x $ = $ x+5.$ The perimeter equals 2$\times $(width + length) $=2(x+x+5)$ $=2(2x+5)=4x+10$ The area equals width $\times $ length = $ x(x+5)=x^{2}+5x $
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