Assume there are no prospective investment projects (I) which will yield an expected rate of return (r) of 25 percent or more,but that there are $5 billion of investment opportunities with an expected rate of return between 20 and 25 percent,an additional $5 billion between 15 and 20 percent,and so on.The investment-demand curve for this economy is: 
Definitions:
Temperance Movement
A social movement aimed at reducing or banning the consumption of alcoholic beverages.
Criticisms
Expressions of disapproval based on perceived faults or mistakes.
Tappan Brothers
Arthur and Lewis Tappan were American abolitionists who played a significant role in the fight against slavery and the formation of the American Anti-Slavery Society.
Charitable Giving
The act of donating resources, typically money or goods, to support causes or organizations benefiting society.
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