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29 votes
The expression "-280" + 18 represents a submarine that began at a depth of feet below sea level and ascended at a rate of 18 feet per minute. What was the depth of the submarine after 5 ​minutes?​

User Kyle Decot
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1 Answer

20 votes
20 votes
-190 is the depth after 5 min. cause if it goes down 18 per minute you would times that by 5. giving you 90 then you would add that to -280.
User Tiago S
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