Recall that on some roads, a skid mark of length L ft. indicates that a car was traveling at least s mph, where s is approx. 2 times the square root of 5L. If a car stopped quickly from a speed of 55 mph, about how long would the skid marks be?
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x ^2 + 6x + 9 (x ^2 - 3x)
_____________ __________
x (x ^2 - 9)
possible answers are
1
___
x -3
x-3
x + 3
1
____
x + 3