Answer
21
Work Step by Step
Plugging in the given value of $x$, we find:
$$f(x)=7x-7 \\ f(4) =7(4)-7 = 21 $$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 11 Data Analysis and Statistics - 11.5 Choose the Best Model for Two-Variable Data - 11.5 Exercises - Mixed Review - Page 780: 20
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