What conditions make a market perfectly​ competitive? A market is perfectly competitive if A. it has many buyers and one​ firm, which produces a product with no close​ substitutes, with barriers to new firms entering the market. B. it has many buyers and a few​ sellers, all of whom are selling differentiated ​products, with no barriers to new firms entering the market. C. it has many buyers and a few​ sellers, all of whom are selling identical ​products, with barriers to new firms entering the market. D. it has many buyers and many​ sellers, all of whom are selling identical​ products, with no barriers to new firms entering the market. E. it has many buyers and many​ sellers, all of whom are selling differentiated​ products, with no barriers to new firms entering the market.

Aproduction line has three machines a, b, and c, with reliabilities of .96, .86, and .85, respectively. the machines are arranged so that if one breaks down, the others must shut down. engineers are weighing two alternative designs for increasing the line’s reliability. plan 1 involves adding an identical backup line, and plan 2 involves providing a backup for each machine. in either case, three machines (a, b, and c) would be used with reliabilities equal to the original three. a. compute overall system reliability under plan 1. (round your intermediate calculations and final answer to 4 decimal places.) reliability b. compute overall system reliability under plan 2. (round your intermediate calculations and final answer to 4 decimal places.) reliability c. which plan will provide the higher reliability? plan2plan1

Given the following information, calculate the savings ratio: liabilities = $25,000 liquid assets = $5,000 monthly credit payments = $800 monthly savings = $760 net worth = $75,000 current liabilities = $2,000 take-home pay = $2,300 gross income = $3,500 monthly expenses = $2,050 multiple choice 2.40% 3.06% 34.78% 33.79% 21.71%

You wish to retire in 13 years, at which time you want to have accumulated enough money to receive an annual annuity of $23,000 for 18 years after retirement. during the period before retirement you can earn 9 percent annually, while after retirement you can earn 11 percent on your money. what annual contributions to the retirement fund will allow you to receive the $23,000 annuity? use appendix c and appendix d for an approximate answer, but calculate your final answer using the formula and financial calculator methods.