0580 P21 - Jun 2018 - Q22 - 5 marks
14012
\(f(x)=5-2x,\quad g(x)=x^2+8\).
(a) Calculate ff(−3). [2]
(b(i)) Find g(2x). [1]
(b(ii)) Find \(f^{-1}(x)\). [2]
