If you can?
if f(x) = -2x - 5 and g(x) = x^4 what is (gº)

81

Step-by-step explanation:

g(x) = x^4                     put f(x) in for x in g(x)

g(f(x)) = (f(x))^4             Substitute the value for f(x) which is (-2x - 5) put - 4 in for the x in f(x)

g(f(x) = (-2x - 5)^4

g(f(x)) = (- 2*(- 4) - 5)^4  Combine

g(f(x)) = (8 - 5)^4             Subtract

g(-4) = (3)^4                    Raise 3 to the 4th power

g(-4) = 81                        Answer.  

i do not know the answer i am sorry