Macroeconomics is concerned with the behavior of all of the firms in a particular industry, while microeconomics focuses on a single firm in the same industry

Studies have shown that drinking one glass of red wine per day may help prevent heart disease. Assume this is true, and a fungal disease destroys a large portion of the grape harvest of California vineyards

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

Which explanation for persistent unemployment used by the original Keynesian model is no longer needed in the new Keynesian model?

A) shifting IS curve B) a fixed nominal wage C) aggregate supply curve is a function of the nominal wage D) rigid wages and prices