The Marginal Cost of Producing the Xth Roll of Film $7 + \frac { 9 } { ( x + 2 ) ^ { 2 } }$

Multiple Choice

The marginal cost of producing the xth roll of film is given by $7 + \frac { 9 } { ( x + 2 ) ^ { 2 } }$ .
The total cost to produce one roll is $700. Find the total cost function $C ( x )$ .

A) $C ( x ) = 7 x + \frac { 9 } { x + 2 } + 696$
B) $C ( x ) = 7 x - \frac { 9 } { x + 2 } + C$
C) $C ( x ) = 7 x + \frac { 9 } { x + 2 }$
D) $C ( x ) = 7 x - \frac { 9 } { x + 2 } + 696$
E) $C ( x ) = 7 x - \frac { 9 } { x + 2 }$