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fomenos
3 years ago
7

Regular exercise can help a person lower their resting heart rate. Suppose an individual’s resting heart rate, in beats per minu

te, is modeled by the function f(x) = –0.1x 3 + 0.6x 2 + 85 after x weeks of regular exercise.
How many weeks of exercise are necessary to lower the individual’s resting heart rate below 70 beats per minute?

7 weeks
8 weeks
9 weeks
10 weeks
Mathematics
2 answers:
masya89 [10]3 years ago
7 0

Answer:

c

Step-by-step explanation:

pochemuha3 years ago
6 0

Answer:

9 weeks

Step-by-step explanation:

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