Can you explain with calculations?

Question 1 8 pts Consumption spending in a country is represented by C = 1800+ 0.8(YT ]. Planned investment is 900, government purchases G = 0, net exports NX = 100 and T = 0.2Y. 1. Write down planned aggregate spending of the economy as a function of Y. Zero points if you do not show your work. (3] 2. An important trading partner of the country goes through a major recession, decreasing the cou ntry's net exports by $500. Use the Keynesian AE model to analyze the total impact of this shock on short-run equilibrium output, clearly explaining the multiplier effect. (5) HTMLEditOI" B I H i ' l ' 1; E E E E E X2 X: 55 '55 @V 60 2'0- 1:] V; [E] HT 1T4 12pt v Paragraph v