Question

Tomas works as an underwater photographer. He starts at a position that

Answer 1

Answer:

His position is now on -18 below sea level

Step-by-step explanation:

So since Tomas is 15 feet below sea level, that means that it's -15. He rose 9 feet which now he is -6 feet below sea level. Now he descends 12 feet which means he goes back down and now he is at -18 below sea level.