In the figure above, if the quantity of yogurt produced increases from 2 gallons an hour to 3 gallons an hour, the opportunity cost of a gallon of yogurt in terms of ice cream is

Matt Taylor is one of the fishermen who comes back to the dock at the end of a fishing day with 720 fish in his boat. He and 40 other fishermen crowd the dock with their fish supplies while hundreds of people, eager to buy fish, make their demands felt on the market. Matt knows that for that fishing day

a. price cannot change b. the market-day supply curve is vertical c. the market-day demand curve is vertical d. quantity demanded is fixed e. his short-run supply curve is upward sloping

The tax cuts of 1981 and 1986

a. stimulated the economy and tax revenues increased to eliminate deficits b. stimulated the economy as supply-side economists predicted it would c. depressed the economy as supply-side economists predicted it would d. had neither a noticeable stimulating nor depressing effect on the economy e. were found to be unconstitutional and so couldn't have had the effect on the economy that the President had hoped