## Algebra and Trigonometry 10th Edition

Published by Cengage Learning

# Chapter 6 - P.S. Problem Solving - Page 506: 9d

#### Answer

$80~beats~per~second$

#### Work Step by Step

The pulse of the patient is the frequency of the given function. The frequency is the inverse of the period. According to item (b) the period is 0.75 seconds: $f=\frac{1}{0.75}=\frac{4}{3}~beats~per~second=\frac{4}{3}\times60=80~beats~per~second$

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