2. If a $580 billion initial increase in spending leads to a $10850 billion change in real GDP. how big is the multiplier?

3. When the following event occurs, the change in Real GDP = Event: The government increases its education funding by $60 billion; the marginal propensity to consume is 0.6. the multiplier.

4. a) Draw a TP-TE (or Keynesian cross) graph for South Africa. Suppose Real GDP is $425 billion while the Real GDP where TE=TP is $475 billions. total, Expenditure (billions) TE-TH HEL th I 1 45 425 Q2 475 Q1 TP - TE total Production (billions) b) If Real GDP is $425 billion, what will happen to inventories, to firm's production and to the Real GDP? Inventories will decrease and Production will increase GDP increases to $475 billion and real

Exercise 4. Imports and the multiplier. The consumption multiplier tries to capture the idea that individuals increase their consumption expenditures when their income increases, even when it is only a short-term increase and their life time income didn't change. However, individuals not only consume domestic products but also, they import part of their consumption. Therefore, if domestic consumption reacts to changes in current income, then it is natural to think that consumption of foreign goods should increase as well. For example, when the economy is booming, imports usually rise. To incorporate this channel into the model, suppose the import equation is given by Mt =āmīt + xm Ỹt Ỹt are described by equations in the previous exercise It = āƒŸt — b(R₁ − ñ) Yt, Ct =ācīt + x Ỹt Ỹt. The other categories of expenditures follow the same rules as in class. a) Derive the IS curve for this new specification. b) What is the economic explanation for why the parameter xm shows up in the…