Consider the economy of Citronia, where citizens consume only oranges. Assume that oranges cost $1 each, and each person can buy at most 5,000 oranges. The government has devised the following tax plans: Plan A Plan B
Consumption up to 1,000 oranges is taxed at 20%. Consumption up to 2,000 oranges is taxed at 30%.
Consumption higher than 1,000 oranges is taxed at 80%. Consumption higher than 2,000 oranges is taxed at 10%.

Required:
Derive the marginal and average tax rates under each tax plan at the consumption levels of 500 oranges.

Consider the local telephone company, a natural monopoly. the following graph shows the monthly demand curve for phone services and the company’s marginal revenue (mr), marginal cost (mc), and average total cost (atc) curves. 0 2 4 6 8 10 12 14 16 18 20 100 90 80 70 60 50 40 30 20 10 0 price (dollars per subscription) quantity (thousands of subscriptions) d mr mc atc 8, 60 suppose that the government has decided not to regulate this industry, and the firm is free to maximize profits, without constraints. complete the first row of the following table. pricing mechanism short run long-run decision quantity price profit (subscriptions) (dollars per subscription) profit maximization marginal-cost pricing average-cost pricing suppose that the government forces the monopolist to set the price equal to marginal cost. complete the second row of the previous table. suppose that the government forces the monopolist to set the price equal to average total cost. complete the third row of the previous table. under average-cost pricing, the government will raise the price of output whenever a firm’s costs increase, and lower the price whenever a firm’s costs decrease. over time, under the average-cost pricing policy, what will the local telephone company most likely do