Hourly Temperature The following graph indicates the

Chapter 6, Problem 6.1.677

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Hourly Temperature The following graph indicates the hourly temperature, in degrees fahrenheit, in Rochester, New York, from 2 a.m. through 12 noon on Friday, February 10, 2011. The function t(x) = 0.17x2 - 1.75x + 15.35 can be used to estimate the hourly temperature in Rochester, where x is the number of hours after 2 a.m on February 10, 2011 and 0 x 10. a) Use the function t(x) to estimate the temperature in Rochester at 8 a.m. on February 10, 2011. Round your answer to the nearest degree. b) Use the graph to determine the hour(s) that the temperature was a minimum. c) Determine the x-coordinate of the vertex of the graph of the function t(x). Then use this value in the function t(x) to estimate the minimum temperature. Round your answer for the vertex to the nearest hour. Round your answer for the temperature to the nearest degree.