For the pair of functions, find the indicated sum, difference, product, or quotient.
-f(x)=x+5, g(x)=x-4
Find (f+g)(-4) .
A) -9
B) 1
C) -17
D) -7

Name: For the pair of functions, find the indicated sum, difference, product, or quotient. -f(x)=x+5, g(x)=x-4 Find (f+g)(-4) . A) -9 B) 1 C) -17 D) -7
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Question

For the pair of functions, find the indicated sum, difference, product, or quotient.
-f(x)=x+5, g(x)=x-4 
Find  (f+g)(-4) .
A)  -9 
B) 1
C)  -17 
D)  -7

Quizplus · Accepted Answer

(f+g)(x) = f(x) + g(x) = (x+5) + (x-4) = 2x + 1. Substituting x = -4 gives (f+g)(-4) = 2(-4) + 1 = -8 + 1 = -7.

For the Pair of Functions, Find the Indicated Sum, Difference