Juanita and gilberto need to decide which one of them will take time off from work to complete the rather urgent task of digging postholes for their new fence. juanita is pretty good with a post auger; she can dig the holes in 1 hour. gilberto is somewhat slow; it takes him 5 hours to dig the holes. juanita earns $200 per hour as a psychiatrist, while gilberto earns $15 per hour as a cobbler. keeping in mind that either juanita or gilberto must take time off from work to dig the holes, who has the lower opportunity cost of completing the task?

Consider the following limit order book for a share of stock. the last trade in the stock occurred at a price of $50. limit buy orders limit sell orders price shares price shares $49.75 500 $49.80 100 49.70 900 49.85 100 49.65 700 49.90 300 49.60 400 49.95 100 48.65 600 a. if a market buy order for 100 shares comes in, at what price will it be filled? (round your answer to 2 decimal places.) b. at what price would the next market buy order be filled? (round your answer to 2 decimal places.) c. if you were a security dealer, would you want to increase or decrease your inventory of this stock? increase decrease

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When used-car dealers signal the quality of a used car with a warranty, a. buyers believe the signal because the cost of a false signal is high b. it is not rational to believe the signal because some used-car dealers are crooked c. the demand for lemons is eliminated d. the price of a lemon rises above the price of a good used car because warranty costs on lemons are greater than warranty costs on good used cars