Question

Tomas works as an underwater photographer. He starts at a position that is 11 feet below sea level. Herises 8 feet, then descends 15 feet to take a photo of a coral reef. Enter an expression to find his positionrelative to sea level when he took the photo and then evaluate the expression.An expression for Tomas's position is?Evaluate the expression:feet below sea level.Tomas took the photo at ——————-? Below sea level Can someone please help?

Answer 1

We know that

• He starts at a position that is 11 feet below sea level.

,

• He rises 8 feet.

,

• Then, descends 15 feet.

Notice that all positions below the sea level are represented by negative numbers. When he rises, that means we have to add, when he descends we have to subtract.

The expression would be

`y=-11+8-15=-18`

Therefore, Thomas is 18 feet below sea level.