Consider an economy described by the following: C = $3.15 trillion 1 = $1.3 trillion G = $3.5 trillion 7. $3 trillion NX = -0.5 trillion F=1 mpc = 0.8 d 0.2 x = 0.2 The simplified expression for the consumption function is A. C=0.75 +0.89 OB. C=3.15+(1 -0.8) OC. C= 3.15 +0.87 OD. C=0.75+ (1 -0.8) The simplified expression for the investment function is: OA /= 1.1 -0.86. OB. 1 = 3.15-0.86 C. I 1.1-0.21 OD. I = 3.15-0.21. The simplified expression for the net export function is: A NX = -0.5-0.2r. OB. NX = -0.2-0.5 06. NX = - 1,1-0 Br. OD. NX = -0.8 -0.2r. An expression for the IS curve is: OA Y = 24.25 -1.10 OB. Y2 - 24 25 OC. Y = 24 25 - 3.15 D. Y = 24.25-27 If the real interest rate is r=2, equilibrium output Y = $ 20.25 trillion (Round your response to one decimal place.) If the real interest rate is r= 5, equilibrium output V = $ 14.25 trillion. (Round your response to one decimal place.) If government purchases increase to 542 trillion and the real interest rate r = 2, equilibrium output Y = 5 23 8 trillion. (Round your response to one decimal place.) If government purchases increase to $4.2 trillion and the real interest rate r= 5, equilibrium output Y=strillion (Round your response to one decimal place.)