The table gives the motor vehicles registered in the United States, C = f(t), in millions,23 in the US in the year t. (a) Do f'(t) and f"(t) appear to be positive or negative during the period 2011–2017? (b) Do f'(t) and f"(t) appear to be positive or negative during the period 2005–2009? (c) Estimate f'(2017). Using units, interpret your an- swer in terms of passenger cars. 2005 2007 2009 2011 2013 2015 2017 247.4 | 254.4 | 254.2 253.1 255.9 263.6 | 272.5

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