Question

If f(x)=-5+1 and g(x)=x^3, what is (g°f)(0)

Answer 1

21
because you have to subtract then carry the one then add it gain then get 20 plus one more

Answer 2

(g o f)(x)=g(f(x))
so
(g o f)(0)=g(f(0))
find f(0) and subsitute for x in g(x)

I'm assuming you mean f(x)=-5x+1
f(0)=-5(0)+1=1

g(f(0))=g(1)=1^3=1

(g o f)(0)=1