The height , in feet, of a ball seconds after it is thrown upwards is given by the function for until the ball hits the ground. Which statement is the best interpretation of the point in this context?
The ball reaches a height of 2 feet after 21 seconds.
The ball's height increases by 21 feet every 2 seconds.
After 2 seconds, the ball is at a height of 21 feet.
The ball hits the ground after 2 seconds.
