1. A submarine is descending to examine the sea floor 6200 feet below the surface it takes a submarine four hours to make this decent what was the submarines change in depth per hour 2. Write an equation to represent the relationship between
the submarines elevation and time. Use y to represent the
elevation in feet and x to represent the time in hours.

3. Another submarines descent can be represented as Y equals -3100 X where y is the elevation and ask is time and x is time in hours how long will it take the submarine to make the next descent