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3. In the IS-LM-PC model, which of the following is assumed to be exogenous? a. G b. C c. I d. Y 4. In the IS-LM-PC model, investment does not depend on a. T. b. Y. c. r. d. x. - risk premium 5. The change in the unemployment rate is approximately equal to a. the negative of the growth rate of output. b. the negative policy rate. c. the negative inflation rate. d. the negative of the growth rate of money supply. 9.2 From the Short to the Medium Run 6. The natural rate of interest is not a. zero. b. the neutral rate of interest. c. Wicksellian rate of interest. d. associated with the natural rate of unemployment