According to data from the National Traffic Safety Institute, the stopping distance y in feet of a

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According to data from the National Traffic Safety Institute, the stopping distance y in feet of a car traveling x mph can be described by the equation y = 0.056057x2 + 1.06657x.

(a) Find the stopping distance for a car traveling 25 mph.
(b) How fast can you drive if you need to be certain of stopping within 150 ft?

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