If potential GDP is equal to $600 billion, what does the long-run aggregate supply
curve look like?
A) It is a horizontal line at $600 billion of GDP.
B) It is a vertical line at a level of GDP below $600 billion.
C) It is a vertical line at $600 billion of GDP.
D) It is a vertical line at a level of GDP above $600 billion.
Which of the following leads to a decrease real GDP?
A) an increase in government spending
B) an increase in the inflation rate in other countries, relative to the inflation in the
United States
C) an increase in interest rates
D) Households have increasingly optimistic expectations about future income.
To be a natural monopoly a firm must
A) control a key resource input.
B) have economies of scale that are so large that it can supply the entire market at a
lower cost than two or more firms.
C) have significant network externalities.