21. Each person's blood pressure is different, but there is a range of blood pressure values that is 5π 3 considered healthy. The function P(t) = -20cos. t + 100 models the blood pressure, p, in millimetres of mercury, at time t, in seconds, of a person at rest. a. What is the period of the function and what does it represent for an individual? b. How many times does this person's heart beat each minute?

Q: Hi can you ansert d and e asap ty

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