According to general trends in the incidence of unemployment across different demographic groups in the United States, which of the following groups have the lowest unemployment rates in the country?

Learning by doing will result in

A) an upward sloping long-run average cost curve. B) a larger long-run marginal cost than long-run average cost. C) a rotation in the isocost curves. D) lower long-run costs than short-run costs.

Accounting profit made by a firm is equal to: a. total revenue minus total cost of the firm

b. total revenue minus implicit cost for the firm. c. total revenue minus explicit cost for the firm. d. marginal revenue minus explicit cost for the firm.