Question

Given the functions f(x)=7-2x and g(x)=5x-3 find g(f(-4)) find f(g(x))

Answer 1

g(f(-4)) = -8

f(g(x)) = 13-10x

Explanation:

g(f(-4)):

Plug in the equation f(x) into the variable x of g(x), we have:

`(gof)= 5(7-2x)-3`

Plug in x = -4 and the answer is -8

f(g(x)):
Plug in the equation g(x) into the variable x of f(x), we have:

`7-2(5x-3) = 7-10x+6 = 13-10x`