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Real Interest Rate (i) and Expected Rate of Return (r) Cumulative Amount of Investment Having This Rate of Return or Higher (Billions per Year) 16% $0 14 5 12 10 10 15 8 20 6 25 A 30 O N 35 40 ences Instructions: Enter your answer as a whole number. a. Assuming no change in the real interest rate, by how much and in what direction will investment ch Investment will |decrease by $ 40 billion. The investment schedule will shift to the left b. Which of the following might cause this change: An increase in excess production capacity A decision to increase inventories