What is the answer for this problem if f(x)= 3x+10x and g(x)=5x-3, find (f+g)(x). A. 3x+15x-3 B. 3x+5x+3 C. 3x-5x+3 D. 18x-3

asked Jan 4, 2019 193k views

1 vote

What is the answer for this problem if f(x)= 3x+10x and g(x)=5x-3, find (f+g)(x).

A. 3x+15x-3
B. 3x+5x+3
C. 3x-5x+3
D. 18x-3

by Alez

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5 votes

This just means that f(x) and g(x) are added, so (f+g)(x) = f(x)+g(x)
f(x)+g(x) = 3x+10x+ 5x-3 = 18x-3

XPheRe answered Jan 5, 2019

6.0k points

1 vote

$(f+g)(x) =f(x)+g(x)=3x+10x+5x-3=\boxed{18x-3}\ D.$

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