The revenue, in dollars, of a company that makes toy cars can be modeled by the polynomial 3x^2 + 4x -60. the cost, in dollars, of producing the toy cars can be modeled by 3x^2-x+200. the number of toy cars sold is represented by x. if the profit is the difference between the revenue and the cost, what expression represents the profit? a) 3x - 260 b) 3x + 140 c) 5x - 260 d) 5x + 140