Prealgebra (7th Edition)

Published by Pearson
ISBN 10: 0321955048
ISBN 13: 978-0-32195-504-3

Chapter 3 - Section 3.4 - Linear Equations in One Variable and Problem Solving - Exercise Set: 60

Answer

The markup is \$5.

Work Step by Step

$P=C+M$ $12=7+M$ $12-7=7+M-7$ $5=M$
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