What are the four most important ways a firm becomes a monopoly? the four main reasons a firm becomes a monopoly are:

a. the government blocks entry, control of a key resource, network externalities, and economies of scale.
b. antitrust legislation, control of a key resource, no close substitutes, and economies of scale.
c. the government blocks entry, control of a key resource, network externalities, and diseconomies of scale.
d. antitrust legislation, control of a key resource, arbitrage, and economies of scale.
e. the lack of patents and copyrights, control of a key resource, network externalities, and economies of scale.

Balance sheet the assets of dallas & associates consist entirely of current assets and net plant and equipment. the firm has total assets of $2 5 million and net plant and equipment equals $2 million. it has notes payable of $150,000, long-term debt of $750,000, and total common equity of $1 5 million. the firm does have accounts payable and accruals on its balance sheet. the firm only finances with debt and common equity, so it has no preferred stock on its balance sheet. a. what is the company's total debt? b. what is the amount of total liabilities and equity that appears on the firm's balance sheet? c. what is the balance of current assets on the firm's balance sheet? d. what is the balance of current liabilities on the firm's balance sheet? e. what is the amount of accounts payable and accruals on its balance sheet? [hint: consider this as a single line item on the firm's balance sheet.] f. what is the firm's net working capital? g. what is the firm's net operating working capital? h. what is the explanation for the difference in your answers to parts f and g?

The cost of the beginning work in process inventory was comprised of $3,000 of direct materials, $10,000 of direct labor, and $10,000 of factory overhead. costs incurred during the period were comprised of $15,000 of direct materials costs, and $100,000 of conversion costs. the equivalent units of production (eup) for the period were 9,000 for direct materials and 6,000 for conversion. the costs per eup were:

M. cotteleer electronics supplies microcomputer circuitry to a company that incorporates microprocessors into refrigerators and other home appliances. one of the components has an annual demand of 235 units, and this is constant throughout the year. carrying cost is estimated to be $1.25 per unit per year, and the ordering (setup) cost is $21 per order. a) to minimize cost, how many units should be ordered each time an order is placed? b) how many orders per year are needed with the optimal policy? c) what is the average inventory if costs are minimized? d) suppose that the ordering cost is not $21, and cotteleer has been ordering 125 units each time an order is placed. for this order policy (of q = 125) to be optimal, determine what the ordering cost would have to be.