Assume you are considering two mutually exclusive machines and need to select one for a cost-cutting project. which one of these sets of characteristics best indicates the use of the equivalent annual cost method of analysis? a. differing costs with no replacement at end of life. b. differing lives and planned replacement at end of life. c. differing lives with no replacement at end of lifed. differing manufacturers and differing operating costs. e. differing required returns with no replacement at end of life.

In which of the following games is it clearly the case that the cooperative outcome of the game is good for the two players and bad for society? a. two oil companies own adjacent oil fields over a common pool of oil, and each company decides whether to drill one well or two wells. b. two airlines dominate air travel between city a and city b, and each airline decides whether to charge a "high" airfare or a "low" airfare on flights between those two cities. c. two superpowers decide whether to build new weapons or to disarm. d. in all of the above cases, the cooperative outcome of the game is good for the two players and bad for society