Question

A scuba diver swam 96 feet beneath the surface of the lake.he then climbs up 49 feet.what is his depth now?

Answer 1

96-49=47 feet


if the diver swam 96 feet deep...then goes up 49 feet....that means his distance below the lake reduced hence you subtract

Answer 2

Diving beneath would be a negative number so:
-96 + 49 = - 47 ft below the surface of the water