Answer:
5? maybe . you might wanna check my answer.
Step-by-step explanation:
The Y axis represents the distance traveled by the plane and the X axis represents either the Height of the plane or the speed. My best guess on the X axis would be speed though.
20
- order from lowest to highest
15, 16, 17, 18, 19, 20, 20, 20, 22, 23, 25, 25
- now find the number in the middle
15, 16, 17, 18, 19, 20, <u>20</u>, 20, 22, 23, 25, 25
20!