The gang system is an example of:
a. specialization and division of labor.
b. diminishing marginal product.
c. the envelope theorem.
d. Gresham's law.
Question 2
Relative to the white median family income, since 1980 African-American median family income has ________ and Hispanic median family income has __________.
a. increased; also increased
b. fallen; also fallen
c. increased; remained about the same
d. fallen; increased