cierrashannon82 cierrashannon82

21-04-2018
Mathematics

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If f(x) = 2x – 6 and g(x) = 3x + 9, find (f + g)(x).

A. (f + g)(x) = 5x + 15
B. (f + g)(x) = 5x + 3
C. (f + g)(x) = x + 15
D. (f + g)(x) = –x – 15

Respuesta :

Professor1994 Professor1994

21-04-2018

(f+g)(x)=f(x)+g(x)=(2x-6)+(3x+9)=2x-6+3x+9→(f+g)(x)=5x+3

Answer: option B. (f + g)(x) = 5x + 3

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