Question

Antonio is working with the following functions. Which composition will result in the function y=x?

I. f(x)=7x-1
II. g(x)=-7x-1
III. h(x)=(1/7x)-1
IV. m(x)=(x+1)/7


g(m(x))

f(g(x))

m(f(x))

g(h(x))