in the long run.
4) Firms can freely enter a market
a.only when the market is a monopoly.
b.only when the market is a monopoly or monopolistically competitive.
c.only when the market is monopolistically competitive or perfectly competitive.
d.when the market is perfectly competitive, monopolistically competitive, or
monopolistic.
5) When quantity demanded responds strongly to changes in price, demand is said to be
a.fluid.
b.elastic.
c.dynamic.
d.highly variable.
6) The demand schedule below pertains to sandwiches demanded per week.
Suppose x = 1. Then the slope of the market demand curve is
a. -3.
b. -1/3.
c.1/3.
d.3
7) Hamid spends an hour studying instead of watching TV with his friends. The
opportunity cost to him of studying is
a.the improvement in his grades from studying for the hour.
b.the improvement in his grades from studying minus the enjoyment of watching TV.