Provide one reason for when you can use the distance formula.

Draw a right triangle such that the distance between the two points is the hypotenuse. Hence, When you use the distance formula, you are calculating the length of the Hypotenuse of a right triangle.

The best and most correct answer among the choices provided by your question is the first choice or letter A which is "45<s<65."

Let x = speed (in mph) 

45 <= x <= 65 for a car 
45 <= x <= 55 for a tractor 

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