#### Clare throws a rock into the lake. The graph shows the rock's height above the water, in feet, as a function of time in seconds. Select all the statements that describe this situation.

A:

The vertex of the graph is (0.75,29)

B:

The y-intercept of the graph is (2.1,0) .

C:

Clare just dropped the rock into the lake.

D:

The maximum height of the rock is about 20 feet.

E:

The rock hits the surface of the water after about 2.1 seconds.

F:

Clare tossed the rock up into the air from a point 20 feet above the water.