Private property rights help to ensure an efficient use of resources, because owners of the resources must bear the costs of inefficient use

The Hound Dog Bus Company contemplates expanding its Virginia operations by offering service from Fairfax to Arlington. The total cost of the trip would be $120, of which $50 is fixed cost, which it has already paid. The firm expects to earn $60 in revenue from the trip. The Hound Dog Bus Company should

a. offer this service because it will earn a positive economic profit b. not offer this service because the marginal revenue is less than the marginal cost c. offer this service because the revenue exceeds fixed cost d. not offer this service because the total cost exceeds the total revenue e. offer this service because the added revenue exceeds the added cost of this service

When firms in a price-taker market are temporarily able to charge prices that exceed their production costs,

a. the firms will earn long-run economic profit. b. additional firms will be attracted into the market until price falls to the level of per-unit production cost. c. the firms will earn short-run economic profits that will be offset by long-run economic losses. d. the existing firms must be colluding or rigging the market, otherwise, they would be unable to charge such high prices.