Question

f(x)=3x-1 and g(x)=x+2, find (f-g)(x)

A. 2x-3
B. 2x-1
C. 4x+1
D. 3-2x

Answer 1

Answer: 2x-3, choice A

Work Shown:

(f - g)(x) = f(x) - g(x)

(f - g)(x) = (3x-1) - (x+2)

(f - g)(x) = 3x-1 - x-2

(f - g)(x) = (3x-x) + (-1-2)

(f - g)(x) = 2x-3