The expression −290+15m represents a submarine that began at a depth of 290 feet below sea level and ascended at a rate of 15 feet per minute. What was the depth of the submarine after 8 minutes?
Select the correct answer below and, if necessary, fill in the answer box to complete your choice.
A) The submarine was (enter answer here) feet below sea level after 8 minutes.
B) The submarine will have reached sea level after 8 minutes.