The speed of traffic flow on a certain highway between 6 A.M. and 10 A.M. on a typical weekday is approximated by the functon where is measured in miles per hour and t is measured in hours, with corresponding to 6 A.M. Find the interval where f is increasing, the interval where f is decreasing, and the relative extrema of f. Interpret your results.

Question

The speed of traffic flow on a certain highway between 6 A.M. and 10 A.M. on a typical weekday is approximated by the functon  where  is measured in miles per hour and t is measured in hours, with  corresponding to 6 A.M. Find the interval where f is increasing, the interval where f is decreasing, and the relative extrema of  f. Interpret your results.

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The Answer of The speed of traffic flow on a certain highway between 6 A.M. and 10 A.M. on a typical weekday is approximated by the functon  where  is measured in miles per hour and t is measured in hours, with  corresponding to 6 A.M. Find the interval where f is increasing, the interval where f is decreasing, and the relative extrema of  f. Interpret your results.

The Speed of Traffic Flow on a Certain Highway Between