Question

The law f(t) = -t2 + 6t + 15 represents the number of kilometers of congestion, as a function of time, registered in a city. With that, determine the maximum number of congestion in that city and the maximum time to reach this value.

Answer 1

Maximum Congestion: 24

Maximum Time to reach Congestion: 3

Explanation:

Easiest and fastest way is to graph the equation and analyze the graph for it's maximum vertex.