Refer to the table. The amount of investment that will be forthcoming in this economy at equilibrium is:

Retirement savings accounts, such as IRAs, help increase economic growth because

A) they encourage international trade. B) government invests them. C) they keep the interest rates high. D) people have an incentive to work harder and longer hours to save for the future. E) savings finances investment.

All the supply of peppermint oil is produced from mint plants grown in one county by several competitive growers (the number of growers is not limited). The quality of land in the county varies greatly

Would you expect the long-run market supply curve to slope upward, downward, or remain constant? Why?