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Amachine purchased three years ago for $720,000 has a current book value using straight-line depreciation of $400,000: its operating expenses are $60,000 per year. a replacement machine would cost $480,000, have a useful life of nine years, and would require $26,000 per year in operating expenses. it has an expected salvage value of $130,000 after nine years. the current disposal value of the old machine is $170,000: if it is kept 9 more years, its residual value would be $20,000. calculate the total costs in keeping the old machine and purchase a new machine. should the old machine be replaced?

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.

Consider the scenario below and let us know if you believe lauren smith's actions to be ethical. let us know why or why not. lauren smith is the controller for sports central, a chain of sporting goods stores. she has been asked to recommend a site for a new store. lauren has an uncle who owns a shopping plaza in the area of town where the new store is to be located, so she decides to contact her uncle about leasing space in his plaza. lauren also contacted several other shopping plazas and malls, but her uncle’s store turned out to be the most economical place to lease. therefore, lauren recommended locating the new store in her uncle’s shopping plaza. in making her recommendation to management, she did not disclose that her uncle owns the shopping plaza. if management decided to go with lauren's uncle's plaza, what additional information would be needed in the financial statements?