18 Which of the following is the best definition of accounting profit? Accounting profit equals total revenue minus depreciation and total a. explicit cost only. b. implicit cost only. c. explicit cost plus implicit cost. d. opportunity cost. e. explicit cost plus opportunity cost. When making decisions, which of the following costs should be ignored? a average costs b. total costs c. marginal costs d. sunk costs e. None-no costs should be ignored. 20 Economies of scale will allow which of the following types of cities to lower their average total cost of clearing snow by investing in larger snow plow fleets? Cities with a. more people. b. more existing snow plows. c. less snowfall. d. larger budgets. e. more snowfall