Suppose life is discovered on Mars and that it turns out to be quite sophisticated. In fact, perfect competition prevails everywhere on the planet. Which of the following characteristics of Martian firms are we likely to observe?
a. None of them ever experiences diminishing marginal returns.
b. They all try to operate where price equals average variable cost.
c. They all try to operate where price equals total cost.
d. The are all price takers

Which of the following best describes how the federal reserve bank banks during a bank run? a. the federal reserve bank has the power to take over a private bank if customers demand too many withdrawals. b. the federal reserve bank can provide a short-term loan to banks to prevent them from running out of money. c. the federal reserve bank regulates exchanges to prevent the demand for withdrawals from rising above the required reserve ratio. d. the federal reserve bank acts as an insurance company that pays customers if their bank fails. 2b2t

Alandowner and his neighbor purchased adjoining undeveloped lots. after both built homes on their respective lots, the landowner suggested to the neighbor that a common driveway be built where the two lots joined. the neighbor agreed. the landowner and the neighbor split the cost of constructing the driveway and entered into a written agreement to equally share the costs of its upkeep and maintenance. the agreement was recorded in the county recorder's office. two years later, the neighbor built a new driveway located entirely on his lot. the common driveway, which the landowner continued to use but which the neighbor no longer used, began to deteriorate. the landowner asked the neighbor for money to maintain the common driveway, but the neighbor refused to contribute. three years later, the neighbor conveyed his lot to a friend. the friend entered into possession and used only the driveway built by the neighbor. by this time, the common driveway had deteriorated badly and contained numerous potholes. the landowner asked the friend to pay half of what it would take to repair the common driveway. the friend refused. the landowner repaired the driveway and sued the friend for 50% of the cost of repairs. will the landowner prevail?

What’s the present value of a perpetuity that pays $250 per year if the appropriate interest rate is 5%? $4,750 $5,000 $5,250 $5,513 $5,788what is the present value of the following cash flow stream at a rate of 8.0%, rounded to the nearest dollar? cash flows: today (t = 0) it is $750, after one year (t = 1) it is $2,450, at t = 2 it is $3,175, and at t=3 it is $4,400. draw a time line. $7,917 $8,333 $8,772 $9,233 $9,695