heart rate and exercise
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I need help of Exercise 79. Please look at attachment where I marked the question that I need help.
79. Exercise and Heart Rate
The polynomial given by 1.6t^2 -28t + 200 calculates the heart rate shown in Figure 5.4(b) where t represents the elapsed time in minutes since exercise stopped.
(a) What is the heart rate when the athlete first stops exercising?
(b) What is the heart rate after 5 minutes?
(c) Describe what happens to the heart rate after exercise stops.
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Solution Summary
This solution shows how to use a polynomial that represents the heart rate after stopping exercising to answer several questions regarding related variables.
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Thank you for using BrainMass.com. I hope that this solution helps you to better understand polynomial equations.
(a) We can substitute 0 for t to the polynomial representing the heart beats to calculate it:
f(t =0) = 1.6 * 0 -28 * 0 + 200 = 200
so the heart rate is 200 beats/min when you first ...
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