Refer to the table above. If the factory plans to hire a seventh worker whose marginal product is 15 pairs, the total output after he is hired will be:

Studies have shown that drinking one glass of red wine per day may help prevent heart disease. Assume this is true, and favorable weather has increased the grape harvest of California vineyards

In the market for red wine, these two developments would A) increase demand and increase supply, resulting in an increase in the equilibrium quantity and an uncertain effect on the equilibrium price of red wine. B) increase demand and increase supply, resulting in an increase in the equilibrium price and an uncertain effect on the equilibrium quantity of red wine. C) increase demand and decrease supply, resulting in an increase in the equilibrium quantity and a decrease in the equilibrium price of red wine. D) increase demand and increase supply, resulting in an increase in both the equilibrium price and the equilibrium quantity of red wine.

An increase in oil prices will shift the aggregate:

a. demand curve leftward. b. demand curve rightward. c. supply curve leftward. d. supply curve rightward.