An economy can produce leather using labor and capital and wheat using labor and land. The total supply of labor is 50 units. Given the supply of capital, the outputs of the two goods depend on labor input as follows: Labor Input to Leather Output of Leather Labor Input to Wheat Output of Wheat 0 0 0 0 5 27 5 19.8 10 38.5 10 31.2 15 47.3 15 42.3 20 56 20 52.1 25 65.7 25 60.6 30 74.5 30 69 35 82.4 35 77.4 40 88.2 40 85.4 45 94.1 45 93.1 50 100 50 100 a. Graph the production functions for leather and wheat. b. Graph the production possibility frontier. What will happen if more labor is employed?