Question

The expression -230 + 15m represents a submarine that began at a depth of 230 feet below sea level and ascended at a rate of 15 feet per minute. What was the depth of the submarine after 5 minutes?

Answer 1

Answer:

The depth of the submarine was -155 feet (155 feet below sea level) after 5 minutes.

Step-by-step explanation:

$-230 + 15m= ? ft\\-230 + 15(5)=? ft\\-230+ 75= -155 ft$