I have done the question, im just not sure about it, here it is.
The functions f and g are defined with their respective domains by:
f(x)=x-1 for all real values of x
g(x)=6/x+3 for all real values of x, x cannot equal -3
the composite function fg is defined by h
a) Find h(x) i got (6/x+3)-2
b)i) Find h^-1(x), where h^-1 is the inverse of h and then find the range.
This is the question im not sure about, i got the answer h^-1(x)= -3x/x+2