Question

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?​

Answer 1

-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.