J07 folks did u get this math question ? it asks abt an inverse function

Bro one question asked what is f(g-1(x)) (i forgot what the number x was so call it x) what is the negative one 😭isnt that inverse i forgot how to do the inverse of a function or did i just overthink it . I think maybe that means use the x value rather than the output but i'm not sure ... i forgot what i got but drop what u got below