In the above figure, the marginal product of labor is zero at point

A price floor is

A) the highest possible legal price that can be charged for a good or service. B) usually equal to the equilibrium price established before the government imposed the price floor. C) the lowest legal price at which a good or service can be traded. D) a legal price of zero that can be charged for a good or service. E) almost always equal to the price ceiling.

A firm wants to minimize the total cost of producing 100 tons of dynamite. The firm uses two factors of production, chemicals and labor. The combination of chemicals and labor that minimizes production costs will be found where

A) the marginal products of chemicals and labor are equal B) the ratio of the amount of chemicals used to the amount of labor used equals the ratio of the marginal product of chemicals to the marginal product of labor C) the ratio of the amount of chemicals used to the amount of labor used equals the ratio of the price of chemicals to the wage rate D) the production of an additional unit of dynamite costs the same regardless of whether chemicals or labor are used E) none of the above