Question

A submarine's position is 600 feet below sea level. It descends 218 feet. What is the submarine's new elevation?
A.-818 ft
B.-600 ft
C.-382 ft
D.382 ft

Answer 1

I think its D or A

Answer 2

Sea level is 0
The submarines position is at -600, it went down an additional 218
So add their distances
\(-600+-218\)

Answer 3

so its C

Answer 4

No, if you are adding negatives just add them normally like you would do with positive numbers
\[~~~-600\\
\underline {+-218}\\
~~-818\]

Answer 5

oh so 218 negative too?

Answer 6

Yes its also negative because it descended (another word for goes down)

Answer 7

thank you