Chapter 1 Function

SPM Question 2006 Paper 2

Given that f(x) = 3x-2 and g(x) = x/5 + 1 find
A) f-1 (x) [1m]
B) f-1g(x) [2m]
C) h(x) such that hg(x) = 2x+ 6 [3m]

Question normally appear in Paper 1 ( first 2 or 3 questions yearly)