The difference between a firm's revenue and its operating expenses is the firm's operating income

The figure above shows the demand and supply of dollars in the foreign exchange market. The equilibrium in the market occurs at a price of ________ Brazilian reals per dollar and a quantity of ________ billion dollars

A) 2.0; 100 B) 2.4; 120 C) 1.6; 100 D) 100; 2.0

Assume the United States is considering either a tariff or a quota to protect motorcycles

For each of the following groups, list whether they should prefer either the tariff or the quota, or be indifferent between the two: importer of motorcycles, taxpayers, foreign producer of motorcycles.