The following graph shows the approximate value of the United States Consumer Price Index (CPI) from December 2006 through July 2007. CPI Dec 2006–July 2007 209 208 207 206 205 204 203 202 201 1 2 3 4 5 6 Dec-06 July-07 O The approximating curve shown on the figure is given by I(t) = -0.04t3 + 0.4t2 + 0.1t + 202 (0 sts 7), where t is time in months since the start of December 2006. I'(t) (a) Use the model to estimate the monthly inflation rate in June 2007 (t = 6). Recall that the inflation rate is I(t) (Round your answer to three decimal places.) (b) Was inflation slowing or speeding up in June 2007? O slowing down O speeding up (c) When was inflation speeding up? When was inflation slowing? Inflation was speeding up prior to one third of the way through ---Select--. 2007 and slowing down after that.

The following graph shows the approximate value of the United States Consumer Price Index (CPI) from December 2006 through July 2007. CPI Dec 2006–July 2007 209 208 207 206 205 204 203 202 201 1 2 3 4 5 6 Dec-06 July-07 O The approximating curve shown on the figure is given by I(t) = -0.04t3 + 0.4t2 + 0.1t + 202 (0 sts 7), where t is time in months since the start of December 2006. I'(t) (a) Use the model to estimate the monthly inflation rate in June 2007 (t = 6). Recall that the inflation rate is I(t) (Round your answer to three decimal places.) (b) Was inflation slowing or speeding up in June 2007? O slowing down O speeding up (c) When was inflation speeding up? When was inflation slowing? Inflation was speeding up prior to one third of the way through ---Select--. 2007 and slowing down after that.

ECON MACRO

5th Edition

ISBN:9781337000529

Author:William A. McEachern

Publisher:William A. McEachern

Chapter7: Unemployment And Inflation

Section: Chapter Questions

Problem 3.7P

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