Company XYZ projects their revenues for the given quarter to be modeled by the function R(x) = 12x2 - 6x + 2000, where x represents the number of goods sold and R(x) the price. The fixed costs for Company XYZ include rent and wages, and is a total of 10000 each month and the variable costs for the quarter can be modeled by the function V (x) = 12x + 1000. (a) Find the break-even point for Company XYZ. [ Select ] (b) Find the marginal profit function. [ Select]