3. The price of a media player, in dollars per player, is given as a function of the weekly sales & according to the formula P(x) = -15x2 + 350x - 2000 for 0 < x < 30.

a. Find P-1(x) and state its domain.

b. Find and interpret the meaning of P-1(105).

c. Find P-1(P(x)).

d. Find the inverse of h(t) = -2t + 1, then compose h(t) and h-(t) to obtain the identity function. e n el cor me) = -2 + 1, the