Respuesta :

Answer:

(f-g)(x) = 2^x  - 3x-15

Step-by-step explanation:

f(x)=2^x-6

g(x)=3x+9

(f-g)(x) = 2^x -6 - (3x+9)

           Distribute the minus sign

(f-g)(x) = 2^x -6 - 3x-9

Combine like terms

(f-g)(x) = 2^x  - 3x-15