Solve the Problem $\text { If } R ( x ) = 240 x - 0.7 x ^ { 2 } \text { and } C ( x ) = 4000 + 0.6 x ^ { 2 } \text {, }$

Solve the problem.
-Total profit is defined as total revenue minus total cost. R(x) is the revenue from the sale of x televisions and C(x) is the cost of producing x televisions.(x) is the cost of producing x televisions. $\text { If } R ( x ) = 240 x - 0.7 x ^ { 2 } \text { and } C ( x ) = 4000 + 0.6 x ^ { 2 } \text {, }$ find the profit from the
Sale of 80 televisions.

A) $22,560
B) $14,880
C) $6880
D) $14,560