The approximating curve shown in the figure is given by 8 July 2021 I(t) = -0.03t + 0.5t - 0.2t + 260 (0 t

The approximating curve shown in the figure is given by 8 July 2021 I(t) = -0.03t³ + 0.5t² - 0.2t + 260 (0 ≤ t ≤ 8), where t is the time in months since the start of November 2020. I'(t) I(t) (a) Use the model to estimate the monthly inflation rate in July 2021 (t = 8). Recall that the inflation rate is your answer to four decimal places.) (b) Was inflation slowing or speeding up in July 2021? Oslowing down speeding up (c) When was inflation speeding up? When was inflation slowing? Inflation was speeding up prior to mid ---Select---2021 and slowing down after that. 

 

July 2021. f 1(1) 276, 272 268 264 260 256 0 Nov 2020 CPI Nov 2020-July 2021 The approximating curve shown on the figure is given by July 2021 I(t) = -0.03t +0.5 0.2t+260 (0 sts 8), where t is time in months since the start of November 2020. r(t) I(t) (a) Use the model to estimate the monthly inflation rate in July 2021 (t = 8). Recall that the inflation rate is your answer to four decimal places.) (b) Was inflation slowing or speeding up in July 2021? slowing down speeding up (c) When was inflation speeding up? When was inflation slowing? Inflation was speeding up prior to mid-Select-- 2021 and slowing down after that. (Round