Solve
-AAA Technology Finds That the Total Revenue Function Associated $R ( x ) = 80 - 0.3 x ^ { 2 }$

Multiple Choice

Solve.
-AAA Technology finds that the total revenue function associated with producing a new type of computer chip is $R ( x ) = 80 - 0.3 x ^ { 2 }$ and the total cost function is C(x) =5 x+18 , where x represents the number of units of chips produced. Find the total profit function, P(x) .

A) $P ( x ) = 0.03 x ^ { 2 } + 5 x + 64$
B) $P ( x ) = - 0.03 x ^ { 2 } + 5 x - 62$
C) $P ( x ) = - 0.03 x ^ { 2 } - 5 x + 62$
D) $P ( x ) = - 0.03 x ^ { 2 } + 5 x + 98$