Respuesta :

Answer:

sorry if I'm wrong I think it's 2

Answer:

C

Step-by-step explanation:

its gaining height at 20 feet a minute.

1 minute=20 feet.

2 minute=40 feet.

3 minute=60 feet.

4 minute=80 feet

5 minute=100 feet

6 minute=120 feet

7 minute=140 feet