A company manufactures a units of one item and y units of another. The total cost in dollars, C, of producing these two items is approximated by the function C=3x²+2xy + 2y²+900. (a) If the production quota for the total number of items (both types combined) is 36, find the minimum production cost. cost = 9476 (b) Estimate the additional production cost or savings if the production quota is raised to 37 or lowered to 35. production cost or savings = 9476