Which is an example of a quadratic function whose graph is entirely above the x-axis

The inside wheels of a car traveling on a circular path are rotating half as fast as the outside wheels. the front two wheels are six feet apart. what is the number of feet in the path traced by the inside front wheel in one trip around the circle? express your answer in the form "k \pi", where k is an integer.

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What are the coordinates of the midpoint of ab? ,1/2) /2,-1) ,-3/2) /2,-2)