Answer:

(f-g)(x) = 5x+11

Step-by-step explanation:

Given

[tex]f(x) = x + 8[/tex]

[tex]g(x) = -4x – 3[/tex]

as

(f-g)(x) = f(x) – g(x)

          = (x+8) – (-4x-3)

          = x+8+4x+3

          = 5x+11

Thus,

(f-g)(x) = 5x+11