A driver's reaction distance is r(x) = 11/6x and braking distance is b(x) = 1/9x 2 .

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A driver's reaction distance is r(x) = 11/6x and braking distance is b(x) = 1/9x2

(a) Find a formula s (x) that computes the stopping distance for this driver traveling at x miles per hour. 

(b) Evaluates (60) and interpret the result.

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