Explain plz

Question 19 (1 point) The real wage is determined by a) the competitive equilibrium. ( b) -(slope of PPF). O c) +(slope of indifference curve). O d) the marginal product of capital. ( e) None of the above Question 20 (1 point) GD bakery produces 500 loaves of bread in a given year. GD pays $100 for flour and yeast, pays $600 in wages, pays $50 in interest on an existing loan, and pays $100 in taxes to the government. One of GD's bread slicing machines, which cost $75 each, wears out over the course of the year and must be scrapped. GD's profit for the year equals $75. GD's bread, therefore, sells for O a) $0.50 per loaf. b) $1.00 per loaf. O c) $2.50 per loaf. O d) $1.50 per loaf. e) None of the above