Solve the Problem $C ( x )$ , and the Revenue Function

Multiple Choice

Solve the problem.
-Given the cost function, $C ( x )$ , and the revenue function, $R ( x )$ , find the dollar amount coming in and going out at the break-even point. Round to the nearest dollar if necessary.
$$\begin{array} { l } C ( x ) = 8000 x + 90,000 \\R ( x ) = 17,000 x\end{array}$$

A) $\$ 170,000$
B) $\$ 10$
C) $\$ 80,000$
D) $\$ 61,200$