Try this option (see the attached picture).
Answer:

Step-by-step explanation:
Given


Required
Determine the new position
It descends means that it moved in the downward position.
So, the new position is:



<em>Hence, the new position f the submarin is -415m</em>
Answer:
blue
Step-by-step explanation:
70 = 2m so m=35
360 - 70 - 70 = 220
220/2 = 110 = n
Your answer is A, that $56 + (-$2) + (-$3)