A toy rocket is launched straight up from the top of a building. The function that models the height as a function of time is
. At what height was the rocket launched?
The height the rocket was launched at can be found by looking at the initial value of the function. The function represents the height as a function of time, so the initial height of the rocket is the value of the function at time t=0.
Therefore, to find the height the rocket was launched at, we need to evaluate the function at t=0. This would give us the initial height of the rocket.