Question

The position of a diving bell is −3\4 mile relative to sea level. The diving bell reached this position after dropping from sea level at a constant rate for 1 1\2 hours. What was the position of the diving bell relative to sea level 1 hour after it began its descent?

Answer 1

Subtract 1 3/4 from -1/2

Answer 2

The diving bell was -1/2 mile relative to sea level.  Hope this helps!