Define efficiency wages

A supply curve reveals:

A) the quantity of output consumers are willing to purchase at each possible market price. B) the difference between quantity demanded and quantity supplied at each price. C) the maximum level of output an industry can produce, regardless of price. D) the quantity of output that producers are willing to produce and sell at each possible market price.

A study of segregated streetcars in the southern United States in the early twentieth century found which of the following?

a. Firms that ran the streetcars were more interested in segregating customers by race than profits. b. The firms that ran the streetcars were unanimous in their support of laws that required segregation of races. c. Before the passage of laws that mandated segregation of races on streetcars, segregation of smokers and nonsmokers was more common than segregation of races. d. Segregation based on gender was more common than race at first.