DUE TODAY HURRY!! A diver is located at 18 feet below sea level and descends 30 feet. How many feet will they need to swim to reach sea level?

Answer: 48 feet
Step-by-step explanation:
The diver is already at a depth of -18 relative to sea level when
descending 30 more feet we reach a depth of -48, in order to return to
sea level the diver must ascend 48 feet.
Answer:
48 feet
Imagine this is a line that measures sea level
| 0; land area
|
| sea level
|
| (18 feet below the sea level where the diver is originally)
|
|
| (the diver is here when he descends 30 feet down)
Hence, the total distance travelled from the sea level: 18 + 30 = 48 feet
This is the distance, 48 feet above the diver has to go to reach sea level.