Intermediate Algebra for College Students (7th Edition)

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: 14

Answer

$(f+g)(x)=2x^{2}+x-6$ $(f+g)(5)=49$

Work Step by Step

$(f+g)(x)=f(x)+g(x)$ $=x-6+2x^{2}$ $=2x^{2}+x-6$ Plug in $x=5$ into $2x^{2}+x-6$. $(f+g)(5)=2\times5^{2}+5-6=2\times25-1=50-1=49$
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