A V8 car engine is coupled to a dynamometer, and the horsepower y is measured at different
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A V8 car engine is coupled to a dynamometer, and the horsepower y is measured at different engine speeds x (in thousands of revolutions per minute). The results are shown in the table.
(a) Use the regression capabilities of a graphing utility to find a cubic model for the data.
(b) Use a graphing utility to plot the data and graph the model.
(c) Use the model to approximate the horsepower when the engine is running at 4500 revolutions per minute.
Transcribed Image Text:
X 1 2 y 40 85 3 140 4 5 200 225 6 245
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