Please help me to solve the questions below. Thank you.

5. The economy has an aggregate production function f(N) = 15N - = N2, where N is labor input. Labor supply is given by N's = -5+3-, where W is the money wage and P is the price level. Desired consumption depends on real income, Y, and can be written as C (Y) = 10 + 0.7Y. Given real interest rate, r, the desired investment is /"(r) = 30 - 200r. The real money demand is characterized by L(Y,r) = 10 + Y -200r. Government spending, G, and nominal money stock, M, is given as G = 0 and M = 200. 1. Find an equation for the aggregate demand curve. 2. What are the equilibrium values of output, consumption, investment, the real interest rate, and the price level