need help please

Question

The one-to-one functions g and h are defined as follows. g= {(-5,-3),(0,6),(2,-5),(3,-9)} h(x) = 3x +13 Find the following.

g^-1(-5) =

h^-1(x)+

(h o h ^-1)(-5)=

Answer 1

g_inverse(-5) = 2 since g(20 = -5

h_inverse(x) = (x-13)/3

h ( h_inverse(-5)) = h ( (5-13)/3 ) = h ( -8/3) = 3(-8/3) + 13 = -8 + 13 = 5