## Related questions with answers

Question

Heart Rate Suppose that a person's heart rate, $x$ minutes after vigorous exercise has stopped, can be modeled by

$f(x)=\frac{4}{5}(x-10)^2+80 .$

The output is in beats per minute, where the domain of $f$ is $0 \leq x \leq 10$. (a) Evaluate $f(0)$ and $f(2)$. Interpret the result. (b) Estimate the times when the person's heart rate was between 100 and 120 beats per minute, inclusive.

Solution

VerifiedStep 1

1 of 8$f(x)=\dfrac{4}{5}(x-10)^2+80$, $0\leq x\leq 10$

We are given the function:

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