(a) Explanation Given: Data of stopping distances for the truck at selected speed are provided. Calculation: Obtain the quadratic function that models a truck’s stopping distances, f ( x ) in feet, on wet pavement, traveling at x miles per hour. Make the table of the data shown in figure-1. Speed (miles per hour) Stopping distance (feet) 35 230 45 350 55 490 65 665 Now, use the steps shown below to obtain the solution. Step 1. First press the [STAT} key on the calculator (b) To determine To calculate: Speed on wet pavement exceeds the distance 446 feet for the function 0.1375 x 2 + 0.7 x + 37.8 > 446 .

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ISBN: 8220101539229

Author: Blitzer

Publisher: Pearson Education (US)

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Chapter 8.5, Problem 89E

(a)

To determine

To calculate: Graph of the quadratic function using statistical menu is shown, then the quadratic regression program.

(b)

To determine

To calculate: Speed on wet pavement exceeds the distance 446 feet for the function 0.1375x2+0.7x+37.8>446.

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Chapter 8.5, Problem 88E

Chapter 8.5, Problem 90E

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Ch. 8.1 - Check Point 1 Solve: . Ch. 8.1 - Prob. 2CP Ch. 8.1 - Prob. 3CP Ch. 8.1 - Prob. 4CP Ch. 8.1 - Prob. 5CP Ch. 8.1 - Prob. 6CP Ch. 8.1 - Prob. 7CP Ch. 8.1 - Prob. 8CP Ch. 8.1 - Prob. 9CP Ch. 8.1 - Prob. 10CP

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Graph of the quadratic function using statistical menu is shown, then the quadratic regression program.

Solution Summary: The quadratic function that models a truck's stopping distances is f(x) in feet, on wet pavement traveling at x miles per hour