a cylinder and a cone. the cone would go on the top, and the cylinder on the bottom.
Answer:
81 meters.
Step-by-step explanation:
The height (in meters), h(x) of a hovercraft x seconds after takeoff, is modeled by:

We are to determine its height at the time of takeoff.
Now, at the time of takeoff, x=0.
We substitute x=0 to solve for h.

The height of the hovercraft at takeoff is 81 meters.
The correct answer to your question is C.
?? I don’t really get it, what should I do.