The expression - 380 + 15y represents a submarine that began at a depth of 380 feet below sea level and ascended at a rate of 15 feet per minute. What was the depth of the submarine after 9
minutes?
Select the correct answer below and, if necessary, fill in the answer box to complete your choice.
OA. The submarine was feet below sea level after 9 minutes.
OB. The submarine will have reached sea level after 9 minutes.
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