D) shifted the aggregate demand curve farther to the left than similar increases had 30
years earlier.
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 increase supply, resulting in an increase in the equilibrium
quantity and a decrease in the equilibrium price of red wine.
B) increase demand and decrease supply resulting in a decrease in both the equilibrium
quantity and the equilibrium price of red wine.
C) increase demand and decrease supply, resulting in an increase in the equilibrium
price and an uncertain effect on the equilibrium quantity of red wine.
D) increase demand and decrease supply, resulting in an increase in both the
equilibrium price and the equilibrium quantity of red wine.
Which of the following offers the best reason why restaurants are not considered to be
perfectly competitive firms?
A) Restaurants do not sell identical products.
B) Restaurants compete in small market areas€neighborhoods and cities€rather than in
regional or national markets. Therefore, restaurants are not small relative to their market
size.
C) Restaurants usually have entry barriers in the form of zoning restrictions and health