1. 20 Homework Part 3 of 8 Points: 0.13 o Consider an economy described by the following: C = $3.25 trillion f = 0.5 1 = $1.2 trillion mpc = 0.75 G = $3.3 trillion d = 0.2 7 = $3 trillion x = 0.15 NX = $ -0.5 trillion O B. C=3.25+ (1-0.75)Y. XC. C=3.25+0.75Y. D. C=1+0.75Y. The simplified expression for the investment function is: O A. /= 3.25-0.75r. O B. / = 3.25 - 0.2r. O C. /= 1.1-0.75r. D. / = 1.1-0.2r. The simplified expression for the net export function is: O A. NX= -0.5-0.15r. O B. NX = - 0.15 -0.5r. O C. NX = - 1.1 -0.75r. O D. NX = - 0.75 - 0.15r