If f(x) = 3x - 2 and g(x) = 2x + 1, find (f-g)(x)A. 5x - 1B. 3 - xC. x - 3D. 5x - 3

(f - g)(x) means f(x) - g(x)

So, you just input the function of f(x) and g(x) altogether, then simplify it.
(f - g)(x) 
= f(x) - g(x)
= 3x - 2 - (2x + 1)
= 3x - 2 - 2x - 1
= x - 3

The answer is c