could you answer this question please

3. Write a small macroeconomic model of expenditure-based equilibrium determination where government spending is a function of income (positively) and exports (negatively). Also assume that exports are negatively related to GDP and investment is a function of interest rates. a. Derive the IS curve from this model and interpret. b. Derive the LM curve using money market equilibrium and interpret. c. Assume that autonomous government spending increases. How will out- put and interest rates change? What is the magnitude of the change in output? Discuss and interpret. d. Assume that money demand in only a function of interest rates. How would your answer to part (c) change