Working as an elevator operator used to be a common job in the workforce four decades ago, but today few jobs remain. The unemployment created by the introduction of automatic elevators would be considered:

In which of the following markets are we most likely to find a monopoly?

a. Automobile production. b. Air travel. c. First-class mail delivery. d. Clothing production.

Figure 7-8

Of the graphs in Figure 7-8, which resembles marginal cost?

a.
1

b.
2

c.
3

d.
4