Use the graph in the picture to answer 2a & 2b: 2a. What is the maximum height of the tennis ball to the nearest tenth of a foot.
A.36.3 feet
B. 36.8 feet
C. 37.5 feet
D. 38.0 feet

2B. What does the x-coordinate of the vertex of the graph represent?
A. the maximum height of the tennis ball
B. The number of seconds the ball is in the air
C. the number of seconds the ball is in the air
D. the initial height of the tennis ball