Question

The demand function p=D(x) and the total cost function C(x) for a particular commodity are given in terms of the level of production (x).
Find: (A): The revenue R(x) and profit P(x).
(B): All values of x for which production of the commodity is profitable. Round these values to the nearest tenth.
D(x)= -0.08x+46
C(x)= 1.33x^2+11.6x+102.2

A) R(x)=
P(x)=
b) ____ < x > ____