Health.After strenuous exercise Sandys heart rate R (beats

Chapter 5, Problem 79

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Health.After strenuous exercise Sandys heart rate R (beats per minute) can be modeled bywhere t is the number of minutes that have elapsed after she stops exercising. a. Find Sandys heart rate at the end of exercising (when she stops at time ). b. Determine how many minutes it takes after Sandy stops exercising for her heart rate to drop to 100 beats per minute. Round to the nearest minute. c. Find Sandys heart rate 15 minutes after she had stopped exercising.

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