Barbara is a producer in a monopoly industry. Her demand curve, total revenue curve, marginal revenue curve, and total cost curve are given as follows: Q = 160minus−4P TR = 40Qminus−0.25Q2 MR = 40minus−0.5Q TC = 4Q MC = 4 Refer to Scenario 1. How much profit will she make?

Which statement is true of both presidential and parliamentary systems of government? a. the executive branch operates independently from the legislative branch. b. the members of the legislative branch are directly elected by the people. c. the head of government is chosen by members of his or her political party. d. the head of government is directly elected by the people

Which of the following statements regarding the southern economy at the end of the nineteenth century is accurate? the south was producing as much cotton as it had before the civil war.

Your sister turned 35 today, and she is planning to save $60,000 per year for retirement, with the first deposit to be made one year from today. she will invest in a mutual fund that's expected to provide a return of 7.5% per year. she plans to retire 30 years from today, when she turns 65, and she expects to live for 25 years after retirement, to age 90. under these assumptions, how much can she spend each year after she retires? her first withdrawal will be made at the end of her first retirement year.