While exercising, a persons recommended target heart rate is a function of age. The recommended number of

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While exercising, a person’s recommended target heart rate is a function of age. The recommended number of beats per minute, y, is given by the function y = f(x) = -0.85x + 187, where x represents a person’s age in years. Determine the number of recommended heart beats per minute for the following ages and explain the results.

(a) 20

(b) 30

(c) 50 

(d) 60

(e) What is the age of a person with a recommended target heart rate of 85?

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A Survey of Mathematics with Applications

ISBN: 978-0134112107

10th edition

Authors: Allen R. Angel, Christine D. Abbott, Dennis Runde

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