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n 24 Consider the benchmark long-run closed-economy model. You are given that MPC=0.6 and the interest sensitivity parameter in the Ed investment function is given by b25000. out of a. Consider that autonomous investment ('0) increases. Illustrate graphically using the loanable funds market how such an event will affect the equilibrium consumption spending, national savings, investment spending and real interest rate. Explain your answers. b. Suppose you are given that autonomous investment (lo) increases by 200 (Le. Alo: +200). Find the changes in C, l, S, Y and r numerically using the A operation. (You need to show your explanations and works in order to earn points in this question.) (For this question, you have to hand-write your answers. You then take a photo or scan your hand-written answers and upload your files. (Files with typed-up answers and computer-generated graphs will NOT be accepted.) On each page of your handwritten answers, write down your name, your student # and sign it. You could at most upload 3 files. Max file size 100MB. Acceptable file types are PDF and image files including JPEG, GIF, PNG, BMP, TIFF.)