Answer
$r=1-\frac{a}{S}$
Work Step by Step
$S=\frac{a}{1-r}$
$1-r=\frac{a}{S}$
$r=1-\frac{a}{S}$
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0-32193-104-1
ISBN 13:
978-0-32193-104-7
Appendix A - Review - A.8 Solving Equations - A.8 Assess Your Understanding - Page A71: 71
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