Given the production function q = 4LK, what is the marginal product of labor when capital is fixed at 25?

Part-time workers are defined as people who are working

A) less than 20 hours per week. B) between 20 and 35 hours per week. C) less than 35 hours per week. D) more than 10 hours per week. E) fewer hours than they would want.

When income is $15,000, the amount of income taxes owed is $2,000; when income increases to $20,000, the amount owed increases to $3,000. The average income tax rate when a person earns $15,000 is

A) 75 percent. B) 15 percent. C) 13.3 percent. D) 20 percent.