Assume That GDP (Y) Is 5,000

question 8

Essay

Assume that GDP (Y) is 5,000. Consumption (C) is given by the equation C = 1,000 + 0.3(Y - T). Investment (I) is given by the equation I = 1,500 - 50r, where r is the real interest rate in percent. Taxes (T) are 1,000 and government spending (G) is 1,500.
a.What are the equilibrium values of C, I, and r?
b.What are the values of private saving, public saving, and national saving?
c.Now assume there is a technological innovation that makes business want to invest more. It raises the investment equation to I = 2,000 - 50r. What are the new equilibrium values of C, I, and r?
d.What are the new values of private saving, public saving, and national saving?

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Definitions:

Break-even Point

The production level at which total revenues equal total expenses, and there is no profit or loss.

Short-run Supply Curve

A graphical representation in economics showing the relationship between the price level and the quantity of goods supplied over a short period, where some factors of production are fixed.

AVC Curve

The Average Variable Cost curve represents how the variable cost per unit of output changes with the quantity produced.

ATC Curve

The Average Total Cost curve, representing the per unit cost of production (fixed and variable costs combined) at different levels of output.