Courtney is standing on a mountain above a lake, and she tosses a rock with a velocity of 48 ft/sec. Here is a table of values that represent the height of the rock, in feet.

Time (seconds) 0 1 2 3 4
Height (feet) 140 160 140 90 10

1. This is a ___ function
a. linear
b. quadratic
c. exponential

2. The maximum height of the rock is ___ feet.
a. 90
b. 1
c. 160
d. 140

3. The rock changes direction after ___ seconds in the air.
a. 1
b. 3
c. 4
d. 2

1. b. quadratic

2. c. 160
3. b. 3

Can you please explain how you got 160 and 3