Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 7 - Functions and Graphs - 7.5 Formulas, Applications, and Variation - 7.5 Exercise Set - Page 485: 13



Work Step by Step

Multiply $d$ to both sides of the equation: $d \cdot f=d \cdot \frac{l}{d} \\df = l$ Divide $f$ to both sides of the equation: $\frac{df}{f}=\frac{l}{f} \\d=\frac{l}{f}$
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