1) If C0 = $392, I = $1,192, G = $779, X = $386, mpc = 0.97, t = 0.18, and mpi = 0.13 (All numbers are in real terms and billions.)
a) Calculate the expenditure multiplier.
b) What would YR be?
c) What would T be?
d) What would C be?
e) What would M be?
f) What would the government surplus/deficit be?
g) What would the trade balance be?
2) What changes would occur if G were increased to $941?
3) What changes would occur if t were decreased to 0.15?
4) Graph your answers for 1), 2), and 3).
YR : real GDP
C : Consumption
C0 : autonomous consumption
mpc : marginal propensity to consume
I : Investment
G : Government spending
T : Tax revenues
t : aggregate tax rate
X : Exports
M : Imports
mpi : marginal propensity to import