19) What do economies of scale, the ownership of essential raw materials, and patents
have in common?
A.They must all be present before price discrimination can be practiced.
B.They are all barriers to entry.
C.They all help explain why a monopolist’s demand and marginal revenue curves
coincide.
D.They all help explain why the long-run average cost curve is U-shaped.
20)
Refer to the diagram. From society’s perspective, if MB2 and MC1 are relevant:
A.Q4 represents too little pollution abatement.
B.Q1 represents too little pollution abatement.
C.Q3 represents an optimal amount of pollution abatement.
D.Q2 represents too little pollution abatement.
21) Regarding people’s preferences, behavioral economists observe that these
preferences are:
A.Stable and not affected by context
B.Fluid and easily influenced by framing
C.Readily and accurately predictable
D.Consistent from one period to the next
22)
Refer to the table above for a certain product’s market in Econland. If the world price of
the product were $6 and a tariff of $1 per unit imported is imposed, then the quantity of
output that would be supplied domestically would be:
A.1,400 units, and the quantity of output that would be imported would be 800 units
B.1,600 units, and the quantity of output that would be imported would be 800 units
C.1,600 units, and the quantity of output that would be imported would be 400 units
D.1,400 units, and the quantity of output that would be imported would be 400 units