Which of these functions are inverses of each other

f(x)= x^3 -13, g(x)= CUBED ROOT of (x-13), and h(x)=x^3+13

and how can you tell?

Okay have you learn that the inverse function is when you change x and y
so y=x^3-13 then x=y^3+13 solve for y and you get CUBED ROOT (x+13)
try the other one
x=y^3+13
then x-13=Y^3 so, solve y and you CUBED ROOT of (x-13)

so therefore, g(x) and h(X) are inverse of each other.