Calculate the payback period for the following investment: A machine costs $100,000 with installation costs of $15,000. Cash inflows are expected to be 26,000 per year for the next seven years. greater than A. 6 years.
B. 3.85 years
C. 5 years
D. 4.42 years

4. suppose that pollution in a neighborhood comes from two factories, with marginal benefit curves given by mb1 = 12 – p1 and mb2 = 8 – p2. the level of pollution in the neighborhood is given by p = p1 + p2. the government wants to limit pollution by instituting a pollution-rights market. the government’s desired level of p is 10, so it prints 10 pollution rights and offers them for sale to the firms.a)find the equilibrium selling price of a pollution right, as well as the allocation of rights (and hence pollution levels) across the two factories. b)repeat part (a) for the case where the government’s desired level of pollution equals 14. c)comment on the usefulness of a pollution rights market in achieving efficient levels of pollution abatement.

Luc do purchased stocks for $6,000. he paid $4,000 in cash and borrowed $2,000 from the brokerage firm. he bought 100 shares at $60.00 per share ($6,000 total). the loan has an annual interest rate of 8 percent. six months later, luc do sold the stock for $65 per share. he paid a commission of $120 and repaid the loan. his net profit was how much? pls

Power plants that rely on coal increase the amount of sulfur dioxide that dissolves into the air, eventually increasing the acidity of precipitation. the higher acidity of rain and snow can damage forests by making it more difficult for plants to absorb minerals from the soil. the equations below provide information about the market demand and supply of electricity. there is a constant marginal external cost of $25 per unit of electricity.d: qd= 200 – 2ps: qs=p – 10what quantity of electricity satisfies allocative efficiency in this market? a. 60b. 70c. 50d. 43.3