For people who live near a bus route, a subway station, or a commuter rail line, public transportation provides a substitute to driving their own cars. so, for these people, the cross-price elasticity of demand between gasoline and public transportation ) negative. b) positive. c) zero. d) infinity

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Any point on a country's production possibilities frontier represents a combination of two goods that an economy:

The purchasing agent for a company that assembles and sells air-conditioning equipment in a latin american country noted that the cost of compressors has increased significantly each time they have been reordered. the company uses an eoq model to determine order size. what are the implications of this price escalation with respect to order size? what factors other than price must be taken into consideration?