Concept explainers
The graph shows stopping distances for tracks at various speeds on dry roads and on wet roads Use this information to solve Exercises 92-93.
a. Use the statistical menu of your graphing utility and the quadratic regression program to obtain the quadratic function that models a truck's stopping distance. f(x), in feet, on dry pavement traveling at x miles per hour. Round the x-coefficient and the constant term to one decimal place.
b. Use the function from part (a) to determine speeds on dry pavement requiring slopping distances that exceed 455 feet. Round to the nearest mile per hour.
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Algebra And Trigonometry With Integrated Review, Books A La Carte Edition, Plus Mylab Math With Pearson Etext -- Title-specific Access Card Package (6th Edition)
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