In the macroeconomic model below, Y is aggregate output, C is aggregate consumption, I is aggregate investment, r is interest rate, Go is government spending, Mo is supply of money, and t is tax rate. The variables Y, I, C, and r are endogenous, Go, Mo. and t are exogenous, and a, b, c, d, k, and m are parameters. b) Y= Using Cramer's rule, solve for Y and I. Which of the following gives the equilibrium values of Y* and I? a) Y=. c) Y = Y=C+I+Go C = a + b(1 t)Y m Mo + b(c-a) kd+m[1-b(1 t)] Mo + Go kd + m [1-b(1-t)] Mo+mGo+c+a kd-m [1+b(1-t)] d) Y = 0 I e) f) Y*= g) dMo + m (Go+c+a) kd+m[1-b(1 t)] mGo-c+a kd-bt yaG-c+mMo kd-bt I' I' = I = -dk (a + Go) kd-m [1+b(1 t)] I= I = c - dr M = kY - mr mc-ka+dGo kd+m[1-b(1 t)] m-dk(a + Go) kd+m[1-b(1-t)] I'=0 mc - (mCdM) b(1-t) - dk(a + Go) kd+m[1-6(1-t)] I = (mC+dMo) b(1-t) kd-bt mCb(1-t) kd-bt