Precalculus (10th Edition)

Published by Pearson
ISBN 10: 0-32197-907-9
ISBN 13: 978-0-32197-907-0

Chapter 3 - Linear and Quadratic Functions - 3.1 Properties of Linear Functions and Linear Models - 3.1 Assess Your Understanding: 4

Answer

$x=50$

Work Step by Step

Add 15x to both sides: $60x-900+15x=-15x+2850+15x \\75x-900=2850$ Add 900 to both sides: $75x-900+900=2850+900 \\75x=3750$ . Divide both sides by 75: $\frac{75x}{75}=\frac{3750}{75} \\x=50$.
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