Answer
8.47
Work Step by Step
We start with the given equation and plug in the given value of $I \ And\ U$ to find:
$$ f=8.5+1.4(I-U) \\ f=8.5+1.4(.025-.044) \\ f=8.47$$
Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)
by Bittinger, Marvin L.; Ellenbogen, David J.; Johnson, Barbara L.
Published by
Pearson
ISBN 10:
0-32184-874-8
ISBN 13:
978-0-32184-874-1
Chapter 2 - Equations, Inequalities, and Problem Solving - 2.3 Formulas - 2.3 Exercise Set - Page 100: 9
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