A company that manufactures handheld games has a fixed cost of $15,000 and a variable cost of $2 per game. The store has determined that the selling price of the handheld game is determined by the price demand equation p(x)=500-3x. Find:

1) The company's cost function C(x)

2) The company's revenue function R(x)

3) The company's profit function P(x)

4) The two points, (x1, y1) and (x2, y2) at which the company breaks even.