Suppose that the following equations describe the relationship between shares of spending in GDP (Y) and the interest rate (R), measured in decimal fractions (that is, R = .05 means that the interest rate is 5 percent). 
(A)Use algebra to determine the value of the interest rate and the share of spending in GDP.
(B)Do the calculation again for a government share of 15 percent rather than 20 percent.
Definitions:
Economic Prospects
The expected future financial performance or potential for growth of an economy, region, or specific market.
Native American Tribes
Indigenous peoples in the United States with distinct cultures, languages, and histories, recognized as sovereign nations by the federal government.
Windings
Coils of wire in electrical devices, such as motors and generators, that generate magnetic fields when current flows through them or induce current when they rotate in a magnetic field.
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