Frictional unemployment is often the result of changes in the demand for labor among different firms

If an increase in consumer incomes leads to a decrease in the demand for camping equipment, then camping equipment is

a. a complementary good b. a substitute good c. a normal good d. an inferior good e. none of the above

If you pay $2,000 in taxes on an income of $20,000, and a tax of $2,700 on an income of $30,000, then over this range of income the tax is

A) regressive. B) proportional. C) progressive. D) There is insufficient information to answer the question.