Question

Finally she needs to find her upper and lower limit of her target heart rate range. To find her upper limit, she must multiply her “heart rate reserve” h by 0.8 and add it to her resting heart rate r. Write an equation for her upper limit u. To find her lower limit, she must multiply her “heart rate reserve” h by 0.6 and add it to her resting heart rate r. Write an equation for her lower limit L.

Answer 1

The equation for the upper limit is: $U = 0.8h + r$

For the lower limit, it is: $L = 0.6h + r$

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• The "heart rate reserve" is h.
• The resting heart rate is r.

Upper limit:

• Multiplication of h by 0.8 is $0.8h$
• Adding to the resting heart rate r, $U = 0.8h + r$

Lower limit:

• Multiplication of h by 0.6 is $0.6h$
• Adding to the resting heart rate r, $L = 0.6h + r$

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