【題目】 A competitive firm will tend to expand its output so long as: Marginal revenues is positive. Marginal revenues is greater than the average cost. Marginal cost is less than average cost. 答: Marginal revenues is greater than mar ...
【題目】 Two goods are complements if a decrease in the price of one good decreases the demand for the other good. increases the demand for the other good. the demand for the other good does not change. None of above is correct 答: increases the demand for the other good. ...