Question

This is inverse functions...any help on 3aii?

Answer 1

`f(x)=2x-3\\ y=2x-3\\ 2x=y+3\\ x=(y+3)/(2)\\ f^(-1)(x)=(x+3)/(2)\\ f(f^(-1)(x))=2\cdot(x+3)/(2)-3\\ f(f^(-1)(x))=x+3-3\\ f(f^(-1)(x))=x`