safinahashim7 safinahashim7 18-01-2017 Mathematics contestada If f(x)=4x−7 what is (a) f−1(5) (b) f−1(y) (Hint: what does x have to be to give an answer of 5, of y?) Enter N into a blank if there is no solution. f−1(5)= f−1(y)=
