Hi I need help on what is the answer to this problems? Below is the question and other concerns will be in the comment section. I hope you can help me and surely I will give you full positive feedback.

III. Problem Solving. Show the complete solution at the back. 1) A toy manufacturing company produces two types of toys, namely square toys and round toys. The total cost (in pesos) of producing x square toys and y round toys is given by TC(x, y) = 2x2 + 4xy + 3y? + 20. If the company currently produces 12 square toys and 6 round toys each hour, what is the approximate additional cost of producing 1 more square toy? (72) (10 points) 1/2 what is the approximate additional cost of producing 1 more round toy? (84) 2) The production function for a certain product is given by the equation z = Q(x, y) = 100xmoyie where z is the. output, x is the number of units of labor and y is the number of units of capital in thousands of pesos. (10 points) 2/2 a) Find the marginal productivity functions of capital investment and the labor when capital investment is PhP500,000 and labor force is 240. (17.95, 87.24) b) In order to increase productivity more rapidly, which of the inputs should the manufacturer increase by one unit from the given current levels?(labor)