Question: A study indicates that spending money on pollution control is effective up to a point, but eventually becomes wasteful. Suppose it is known that when

A study indicates that spending money on pollution control is effective up to a point, but eventually becomes wasteful. Suppose it is known that when x million dollars is spent on controlling pollution, the percentage of pollution removed is given by P(;1:) : 100/(O.06$2+14.57) At what rate is the percentage of pollution removal Plx) changing when 42.85 million dollars are spent? Round your answer to four decimals

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