A scuba diver dove from the surface of the ocean to an elevation of -89 – feet at a rate of -20 feet per 10 minute. After spending 14 minutes at that elevation, the diver ascended to an elevation of -182 feet. 10 The total time for the dive so far was 21– minutes. What was the rate of change in the diver's elevation during the ascent? Round your answer to the nearest hundredth. ft/min. The rate of change of the divers elevation was