tolong kak udah pusing nih bantuin dong

f(x) = 4x - 5
g(x) = x + 6

(f - g)(x)
= f(x) - g(x)
= (4x - 5) - (x + 6)
= 4x - 5 - x - 6
= 3x - 11

Jawabannya A