Hi, please help with this questions below. I will need an answer and working for this. Kindly do assist me in it. I only have an hour left to submit the answer. Thank you so much.

Question 4 a) Explain how an expansionary monetary policy affects the money supply, aggregate output, money demand, interest rates, and planned investment. Provide an example of each. (6 Marks) b) Using the short-hand symbols G, Y, Md, r and I, demonstrate the effects of an expansionary fiscal policy. (2 Marks) c) Using the short-hand symbols Ms, r, I, Y, and Md, demonstrate the effects of an expansionary monetary policy. (2 Marks) (Total: 10 Marks)