A person x inches tall has a pulse rate of y beats per minute, as given approximately by -1/2 y=598x for 30 ≤x≤ 75. What is the instantaneous rate of change of pulse rate for the following heights? (A) 30-inches (B) 67-inches

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A: I am attaching image so that you understand each and every step.

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A: A detailed solution is given below.

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