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Mathematics 97 Online
OpenStudy (anonymous):

Janna’s target heart rate zone is 140bpm - 182bpm. Amy’s target heart rate zone is 140bpm - 186bpm. Jill‘s target heart rate zone is 146bpm -1 86bpm. Christi zone is the same as Jill. The person whose zone has a range of 46bpm is Janna Amy Jill Christi

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