Please label all parts of the answer You are given the following equations for the AD and SAS curves: Y-2.5 Ap + 2Ms/P where current Ap - 2800, Ms - 2000 Y = 11000 - 20W + 1000P where current W - 50 The economy has a natural real GDP Yn - 11000 a. Derive AD. SAS and find initial equilibrium price and Y b. If the access to credit tightens, which reduce Ap by 300, find new equilibrium price and real wage rate c. To prevent the move of AD caused by b by monetary policy, money supply should be changed by how much? d. Assuming b, what will be the price level when the economy is back to long run equilibrium again. e. Draw a graph to show your results from a-d