5) A company manufactures two products, X and Y, and the jointcost function for these products is given by C = 0.0020? + y)2 + x + 0.25:1} + 3000, where c is the total cost of producing x units of X and y units of Y. Determine the marginal cost with respect to 2: when x = 450 and y = 550 and provide its economic interpretation