Acme Communication Finds That the Total Revenue Function Associated with Producing

Multiple Choice

Acme Communication finds that the total revenue function associated with producing a new type of cellular phone is $R ( x ) = 213 x - x ^ { 2 }$
. and the total cost function is C(x) =8000+6 x , where x represents the number of units of cellular phones produced. Find the total profit function, P(x) .

A) $P ( x ) = x ^ { 4 } - 207 x ^ { 2 } + 8000$
B) $P ( x ) = - x ^ { 2 } + 219 x + 8000$
C) $P ( x ) = - 2 x ^ { 2 } + 225 x - 9000$
D) $P ( x ) = - x ^ { 2 } + 207 x - 8000$