Sent a picture of the solution to the problem (s).
Step-by-step explanation:
14. 8
15. 60
16. 42
17. 45
18. 2
19. 8
20. 13
21. 18
Adding 4 to both side is wrong he has to be subtract 4 to both side

Here we go ~
The air plane descends 15 feels every 1.45 seconds, so it's unit rate is :

Now we have to calculate the descent in 3.5 minutes ~


So, the airplane descends 2172.41 feels in three and a half minutes ~
Answer:
14√2 feet
Step-by-step explanation:
The length of a diagonal of a square is
where
is the side length of the square. Therefore,
.