Car Performance The time (in seconds) required to attain a speed of miles per hour from

Chapter 1, Problem 14

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Car Performance The time (in seconds) required to attain a speed of miles per hour from a standing start for a Dodge Avenger is shown in the table. (Source: Road & Track) (a) Use the regression capabilities of a graphing utility to find a quadratic model for the data. (b) Use a graphing utility to plot the data and graph the model. (c) Use the graph in part (b) to state why the model is not appropriate for determining the times required to attain speeds less than 20 miles per hour. (d) Because the test began from a standing start, add the point to the data. Fit a quadratic model to the revised data and graph the new model. (e) Does the model from part (d) more accurately model the behavior of the car for low speeds? Explain.

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