algebra 2 problem

Question

For the given function f and g, find the following and state the domain of each result
F(x) =3x-4; g(x) =7x-9

 

(f-g)(x)=?

Answer 1

f(x) = 3x - 4

g(x) = 7x - 9

 

(f-g)(x)

      = f(x) - g(x)

      = 3x - 4 - (7x - 9)

      = 3x - 4 - 7x + 9

      = -4x + 5

 

Domain is all x