Question

PLEASE HELP!! FAN AND MEDAL!!

Derek threw a tennis ball up in the air. The following table represents the height f(t), in meters, of the ball above the ground at time t seconds:


Time (t)
(in seconds) Height f(t)
(in meters)
1 15
2 20
3 15
4 0


Which of the following is represented by the x-intercept of f(t)?
The ball touches the ground after 4 seconds.

The ball was thrown from a height of 0 meters.

The ball reaches a maximum height of 20 meters.

The ball reaches the maximum height in 2 seconds.