Currently, college graduates are earning about ____ more than high school grads over the course of their careers.

Which of the following is correct?

a. Well designed tax cuts can increase investment which fluctuates more than consumption over the business cycle. b. Well designed tax cuts can increase investment but it fluctuates less than consumption over the business cycle. c. Tax cuts have little effect on investment which fluctuate more than consumption over the business cycle. d. Tax cuts have little effect on investment but it fluctuates less than consumption over the business cycle

In 1971, a bank worker could process 265 checks in 1 hour. Currently, computers with built-in reader-sorter processing capacity have pushed that number above 100,000 checks per hour. Economists describe this type of activity as

A. the exploitation of labor. B. an increase in labor productivity. C. the displacement of labor. D. the effects of comparative advantage. E. the mutual gains received through voluntary trade.