External economies of scalea. lead to the creation of a single large monopoly. b.cannot be associated with a perfectly competitive industry. c.tend to result in large profits for each firm and an industry with relatively few firms. d.are more likely to be associated with a perfectly competitive industry.

When interest is compounded continuously, the amount of money increases at a rate proportional to the amount s present at time t, that is, ds/dt = rs, where r is the annual rate of interest. (a) find the amount of money accrued at the end of 3 years when $4000 is deposited in a savings account drawing 5 3 4 % annual interest compounded continuously. (round your answer to the nearest cent.) $ (b) in how many years will the initial sum deposited have doubled? (round your answer to the nearest year.) years (c) use a calculator to compare the amount obtained in part (a) with the amount s = 4000 1 + 1 4 (0.0575) 3(4) that is accrued when interest is compounded quarterly. (round your answer to the nearest cent.) s = $

Two assets have the following expected returns and standard deviations when the risk-free rate is 5%: asset a e(ra) = 18.5% σa = 20% asset b e(rb) = 15% σb = 27% an investor with a risk aversion of a = 3 would find that on a risk-return basis. a. only asset a is acceptable b. only asset b is acceptable c. neither asset a nor asset b is acceptable d. both asset a and asset b are acceptable

Gif the federal reserve did not regulate fiscal policy, monitor banks and provide services for banks, what would most likely be the economic conditions to transact business in the u. s.? the economy would primarily be based on a barter system rather than a fiat system. there would be no discrimination in lending by local banks. the economy would be less efficient and transactions most likely more costly.