Assume that an open economy with a floating exchange rate is described by the equations: C = 0.85(Y-T)T= 1000I= 1500 -200r G= 3000NX= 2000 - 250e (M/P)d = 0.4Y - 500r M= 4000S-I= 750 - 250rP= 2r* = 4 Derive the equation for the IS* curve. Derive the equation for the LM curve. Solve for Y. Solve for NX and e. Using the information from parts a. to d. above, graphically illustrate on a clearly labelled diagram, the short-run impact of contractionary fiscal policy on the exchange rate and level of output in this small open economy. Assuming that the economy adopted a fixed exchange rate system, illustrate on a clearly labelled diagram, the impact of contractionary fiscal policy. In one sentence, explain the type of intervention needed to maintain the fixed exchange rate proposed in part f. above.