(a) Complete the Table above (show the last column only) and determine the equilibrium real output of the private, open economy. Clearly show your steps and calculations. (b) Discuss the applications of Keynesian macroeconomic theory to the United States Great Recession of 2007-2009. Your discussion should include the macroeconomic problems encountered, the Keynesian policies applied, and the effectiveness of each applied policy to address the problems. (c) Discuss or explain three economic factors responsible for the instability of business investment in the USA