The Revenue R from the Sale of X Cameras Is $R = 65 x - x ^ { 2 }$

Multiple Choice

The revenue R from the sale of x cameras is given by $R = 65 x - x ^ { 2 }$ . The cost C of producing x cameras is given by $C = 91 + 45 x$ . How many cameras must be produced and sold in order to break even?

A) 7 cameras
B) 8 cameras
C) 10 cameras
D) 15 cameras
E) 19 cameras