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consider the following closed economy: y= C+It G C = 120 + 0. 65 ( Y- T ) I = 350 - 100or G = 100 T= 120 where y is GDP, C is consumption, I is investment G is government expenditures, Tis tates, and r is interest rate. Suppose that if the economy were at the full employment level of output line , at its natural level of cutput ), GDP would be 2200. (5 marks each) a ) what is the budget balance for this economy? b) what is the marginal proof propensity to consume for this economy? ( ) Supposer is 10%. What is the expenditure multiplier for this andsort economy ? d ) Solve for GDP when 1= 101. How does it compare with the natural level of output? e) Assuming no change is fiscal policy, what change in Interest rate would restore the natural level of output