posted by Anonymous .
A scuba diver dove from the surface of the ocean to an elevation of −89
feet at a rate of −24 feet per minute. After spending 11.75 minutes at that elevation, the diver ascended to an elevation of −8
feet. The total time for the dive so far was 18
minutes. What was the rate of change in the diver's elevation during the ascent? Round your answer to the nearest hundredth.