According to data from the National Highway Traffic Safety Admin- the accident rate as a function of the age of the driver in years x can be approximated by the function istration, f(x) = 0.0232x² – 2.28x + 60.0, for 16 < x< 85. Find both the age at which the accident rate is a minimum and the minimum rate to the nearest hundredth. 73/College Bhrollment The table lists total fall enroll- ments in degree-granting postsecondary colleges in the United States for selected years. (a) Plot the data. Let x = 0 correspond to the year 2008. Enrollment Year (in millions) 2008 19.1 20.4 6007 2010 21.0 (b) Find a quadratic function f(x) = ax² + bx + c that models the data. %3D 2011 21.0 20.6 (c) Plot the data together with f in the same window. How well does f model enrollment? 2012 Source: National Center (d) Use f to estimate total enrollment in 2013 to the nearest tenth of a million. w for Education Statistics. , and 21.

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