Traffic Control Traffic engineers install flow lights at
Chapter , Problem 1.3.92(choose chapter or problem)
Traffic Control Traffic engineers install flow lights at the entrances of freeways to control the number of cars entering the freeway during times of heavy traffic. For a particular freeway entrance, the number of cars waiting to enter the freeway during the morning hours can be approximated by N = -5t t 2 + 80t - 280 where t is the time of the day and 6 t 10.5. According to this model, when will there be 35 cars waiting to enter the freeway?
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