Answer
$(f+g)(x)=6x-7$
$(f+g)(5)=23$
Work Step by Step
$(f+g)(x)=f(x)+g(x)$
$=4x+2+2x-9$
$=6x-7$
Plugin $x=5$ into $6x-7.$
$(f+g)(5)=6\times5-7=30-7=23$
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 2 - Section 2.3 - The Algebra of Functions - Exercise Set - Page 132: 12
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