Step-by-step explanation:
1

2)

3)
1+0i
4)

5)
3 - 4i
6)

Answer:
-4 meters
Step-by-step explanation:
-9 - 20 meters (went down)
= -29 meters
-29+25 meters (went up)
= -4 meters
Hope this helped!
Yes it is right I don’t know what else to say because I need a 20 character limit but it is right