Sources of monopoly power A monopoly, unlike a perfectly competitive firm, has some market power. Thus, it can raise its price, within limits, without quantity demanded falling to zero. The main way monopolies retain their market power is through barriers to entry, which prevent other companies from entering monopolized markets and competing for customers.
Consider the market for tanzanite. The mines for this blue-purple gemstone, found only in Tanzania, are owned by the local government. Given that no one is allowed into the mines without government permission, the market structure for tanzanite highly resembles that of a monopoly.
Which of the following best explains the barriers to entry that exist in this scenario?

a) Control of a scarce resource
b) Legal restrictions
c) Economies of scale

Afinancial institution, the thriftem bank, is in the process of formulating its loan policy for the next quarter. a total of $12 million is allocated for that purpose. being a full-service facility, the bank is obligated to grant loans to different clientele. the following table provides the types of loans, the interest rate charged by the bank, and the possibility of bad debt as estimated from past experience.type of loaninterest rateprobability of bad debtpersonal.140.10car.130.07home.120.03farm.125.05commercial.100.02 bad debts are assumed unrecoverable and hence produce no interest revenue either. competition with other financial institutions in the area requires that the bank allocate at least 40% of the total funds to farm and commercial loans. to assist the housing industry in the region, home loans must equal at least 50% of the personal, car, and home loans. the bank also has a stated policy specifying that the overall ratio for bad debts on all loans may not exceed .04. formulate this problem as a linear program. define your variables clearly and write all the constraints explaining the significance of each.

Scenario: you have advised the owner of bond's gym that the best thing to do would be to raise the price of a monthly membership. the owner wants to know what may happen once this price increase goes into effect. what will most likely occur after the price of a monthly membership increases? check all that apply. current members will pay more per month. the quantity demanded for memberships will decrease. the number of available memberships will increase. the owner will make more money. bond's gym will receive more membership applications.

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends > a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?