a diver's elevation is -30 feet relative to sea level. she dives down 12 feet. what is her elevation after the dive?
a. 12 feet b. 18 feet
c. -30 feet d. -42 feet
2 answers
If the diver were 30 feet below sea level and she went down another 12 feet then she must be 42 feet below sea level. That makes it -42 feet.
-42