Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 1 - Foundations for Algebra - Common Core Cumulative Standards Review - Selected Response - Page 75: 7


Answer Choice $B$

Work Step by Step

Each balloon is 2 dollars, and he has a 10 dollar discount, so the answer is $y = 2x - 10$ where $x$ is how many balloons he buys, and $-10$ is his discount.
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