The height of a flare is h, given in metres. The function for height of flare with respect to time t, given in seconds.
The height of a flare is represented by h, given in metres. The function for the height of a flare with respect to time t, given in seconds, after the flare was fired from a boat, can be modeled by the function
h (t) = -5.25(t-4)2 + 86
What was its height when it was fired?
What was the maximum height of the flare?
What was the time when the flare reached its maximum height?
How many seconds after it was fired did the flare hit the water?