Question

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

is 15 feet below sea level. He rises 9 feet, then descends 12 feet to take a
photo of a coral reef. Write and evaluate an expression to find his post
relative to sea level when he took the photo.
Ssion to find his position

Answer 1

His position is now on -18 below sea level

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.