3. If consumption C = 150 + .8Y investment I = $35 Govt. expenditures G = $40 exports X = $15 and imports M = $10a. What is the level of aggregate expenditures if income level were $1000? 1 ptb. What is the level of aggregate expenditures if income level were $1200? 1 pt c. Solve for the equilibrium level of income (output). (Hint: Set up the equation asY = C + I + G + X M and then solve for Y) 2 pts4. Use the same information as in Problem 3 but suppose that investment increases by $10 to $45.a. Calculate the new equilibrium level of income (output) 1 ptb. What is the value of the spending multiplier? 1 pt