College Algebra (11th Edition)

Published by Pearson
ISBN 10: 0321671791
ISBN 13: 978-0-32167-179-0

Chapter 1 - Section 1.2 - Applications and Modeling with Linear Equations - 1.2 Exercises - Page 92: 11



Work Step by Step

Set up an equation that satisfies all three sides. $2(2x)+x=30$ Factor out the expression (x) and add. $5x=30$ Solve for x by dividing by 5. $x=6$ Do a mental check by making sure that the value satisfies the problem. $x=6$, and therefore $2x=12;2(12)+6=30$
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