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
