A scuba diver dove from the surface of the ocean to an elevation of -49. feet at a rate of -14.3 feet per 10 minute. After spending 14.25 minutes at that elevation, the diver ascended to an elevation of-8 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

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