A submarine descends below the ocean's surface at a of rate 75 feet per minute. How many feet below the ocean's surface will the submarine be in 12 minutes?
The submarine would be 900 below the ocean surface after 12 minutes assuming it started its descent at the surface of the ocean.
The formula for distance traveled (in this case the distance a submarine descends) over a period of time is:
In this problem we are told the rate,
Substituting these into the formula and calculating gives: