# macroeconomics

i have a college macroeconomics question due tommorow can u help??
economy decribed as follows:
C=14,000+.5(y-t)-40,000r
I=8000-20,000r
G=7000
NX=-1800
T=8000
Y=40000
1)find a numeric equation relating planned aggregate expenditure to output and the real interest rate??
2)at what value should the fed set the real interest rate to eliminate any output gap???

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