One piece of evidence in favor of the efficiency wage model is that some sectors of the economy pay relatively high wages, whereas other sectors pay lower wages. this supports the efficiency wage model as it seems to provide evidence of what?
a. unemployment is constant across sectors. b.there are compensating differentials being paid depending on the type of work being done. c. workers voluntarily provide bonds in case they are caught shirking. d. high-wage firms take advantage of delayed-compensation contracts. e. the existence of dual labor markets.

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?

Which economic indicators are used to measure the global economy? check all that apply. a. purchasing power parity b. trade volumes c. spending power parity d. labor market data e. gross domestic product f. trade deficits and surpluses

Advertisers are usually very conscious of their audience. choose an issue of a popular magazine such as time, sports illustrated, vanity fair, rolling stone, or the like. from that issue select three advertisements to analyze. try to determine the audience being appealed to in each advertisement and analyze the appeals used to persuade buyers. how might the appeals differ is the ads were designed to persuade a different audience.