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

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.

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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

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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