Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 1 - Foundations for Algebra - Cumulative Test Prep - Multiple Choice: 8

Answer

G) $y=2x-10$

Work Step by Step

Convert the word problem into an algebraic expression for the total purchase price. Let x be the number of balloons Bill purchased. A coupon reduces the purchase price. $\underbrace{each\ balloon\ costs\ \$2}\ \underbrace{\$10\ coupon}$ $\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ 2x\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ - 10\ \ \ \ \ \ \ \ \ \ \ \ =$ purchase price If y is the purchase price: $y=2x-10$
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