Answer:
B
Explanation:
What this tells you is to take 4x + 1 away from 5x - 4
Givens
f(x) = 5x - 4
g(x) = 4x + 1
Formula
(f - g)(x)
Solution
(f - g)x = 5x - 4 - (4x + 1) remove the brackets
(f - g)x = 5x - 4 - 4x - 1 Collect like terms
(f - g)x = 5x - 4x - 4 - 1
(f - g)x = x - 5
Answer
B