Homework Answers
A) from SRAS : Y = 750+P-40
Y = 710+P
From AD: Y = 600+ 10*600/P
Y = 600 + 6000/P
So solving two eqn
710+P = 600+6000/P
110 + P = 6000/P
P* = 40
Y* = 150
.
b) now M = 800
So new AD :
Y = 600+8000/P
So, as Y = 710+P
So at eqm
710+P = 600+8000/P
110+P = 8000/P
P' = 50
Y' = 710+50 = 760
from Okun law
(760-750)/750 = -2(u - .05)
1/75 = -2u + .1
2u = .0867
u = .0433
.
c) when price expectations adjust,then
Y = Y_bar = 750 : potential GDP
SRAS shifts upwards
So from AD:
750=600+10*800/P
P = 800/15
= 53.33
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> From part A, Y* is 750
Katy McWilliams Fri, Dec 10, 2021 7:35 PM