Answer
$7$
Work Step by Step
$\frac{f(a+h)-f(a)}{h}=\frac{7(a+h)-4-(7a-4)}{h}=\frac{7a+7h-4-7a+4}{h}=\frac{7h}{h}=7$
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 6 - Section 6.1 - Rational Expressions and Functions; Multiplying and Dividing - Exercise Set - Page 415: 99
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