a. What is the marginal propensity to consume implicit in these data?
b. Plot a 45° line, and then use the data to draw an aggregate expenditure line.
c. What is the equilibrium level of real GDP? Illustrate it on your diagram.
d. Suppose that investment spending increased by 250 at each level of income. What would happen to equilibrium GDP?

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Real GDP C NX 3,000 4,000 5,000 6,000 7,000 8,000 2,500 3,250 4,000 4,750 5,500 6,250 300 500 200 300 500 200 300 500 500 200 200 300 300 500 200 300 500 200 of