The height of a rocket a given number of seconds after it is released is modeled by . What does t represent?

⭕ the number of seconds after the rocket is released

⭕ the initial height of the rocket

⭕ the initial velocity of the rocket

⭕ the height of the rocket after t seconds

This question is not about solving the stated problem, but about understanding it.

A rocket is launched, and its height above sea level t seconds after launch is given by the equation h(t)=−4.9t2+1000t+550

a) From what height was the rocket launched?

To answer this question, we'd find:

The t intercept

The h intercept

The t coordinate of the vertex

The h coordinate of the vertex


b) What is the maximum height the rocket reaches?

To answer this question, we'd find:
Select an answer

The t intercept

The h intercept

The t coordinate of the vertex

The h coordinate of the vertex


c) If the rocket will splash down in the ocean, when will it splash down?

To answer this question, we'd find:
Select an answer

The t intercept

The h intercept

The t coordinate of the vertex

The h coordinate of the vertex

Please show all work so I can work on other problems. Thank you for your help.