Assume consumption is represented by the following: C = 400+.75Y. Also assume that planned investment (I) equals 100. a. Given the information, calculate the equilibrium level of income. (2 marks) b. What is the savings function? (1 marks) c. Given the information, calculate the level of consumption and saving that occurs at the equilibrium level of income. (3 marks) d. Suppose planned investment increases by 100. i. Calculate the new equilibrium level of income. (3 marks) ii. Given your answer, what is the size of the multiplier for this economy? (2 marks) e. Use the Keynesian cross diagram to reflect both equilibrium output. (3 marks) 8. What are the two types of macroeconomic policy channels that are available to the government and describe how they work? (4 marks) 9. Explain what is meant by the multiplier and explain what variable(s) determines its size. (3 marks)