chatlinty chatlinty 19-01-2018 Mathematics contestada f(x)=2x-6 and g(x)=3x+9, find (f+g)(x) A (f + g)(x) = –x – 15 B (f + g)(x) = 5x + 3 C (f+g)(x)=5x+15 D (f+g)(x)=x+15