A barber currently cuts hair for 50 clients per week and earns a profit. He is considering
expanding his operation in order to serve more clients. Should he expand?
a. Yes, because cutting hair is profitable.
b. No, because he may not be able to sell more services.
c. It depends on the marginal cost of serving more clients and the marginal revenue he
will earn from serving more clients.
d. It depends on the average cost of serving more clients and the average revenue he
will earn from serving more clients.
Which of the following statements concerning the aggregate demand and aggregate
supply model is correct?
a. The aggregate demand and aggregate supply model is nothing more than a large
version of the model of market demand and supply.
b. The price level and quantity of output adjust to bring aggregate demand and supply
into balance.
c. The aggregate supply curve shows the quantity of goods and services that
households, firms, and the government want to buy at each price.
d. All of the above are correct.