Question: a . By what amount has aggregate demand changed? $ billion b . If the marginal propensity to consume is 0 . 8 0 ,

a. By what amount has aggregate demand changed?
$ billion
b.If the marginal propensity to consume is 0.80, what is the expenditures multiplier?
c. By how much will investment demand need to change in order to restore the economy to long-run equilibrium?
$ billion

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