please answer

3. Consider the following macroeconomic model: C = 1,500 + 0.75Y I = 1,250 G = 1,250 NX = - 250 Y =C+I+G+NX a. Consider just the consumption function. What is autonomous consumption? What is the marginal propensity to consume? b. Considering the whole model, what is the value of autonomous expenditures? c. Solve the model for equilibrium. Show work. d. Using your answer from (c), draw this model on the axes below. Draw the AE function (do not draw the individual components of the AE function), and also draw the 45 degree line to show the equilibrium. Numerically label the equilibrium. Numerically label the intercept of the AE function