To answer the questions based on the provided data, let's analyze both Kimberly's and Katrina's performance in terms of jumping jacks.
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The person doing the most jumping jacks per minute:
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For Kimberly:
- 3 min: 28 jumping jacks → 28/3 = 9.33 jacks/min
- 8 min: 58 jumping jacks → 58/8 = 7.25 jacks/min
- 12 min: 82 jumping jacks → 82/12 = 6.83 jacks/min
- 16 min: 106 jumping jacks → 106/16 = 6.625 jacks/min
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For Katrina:
- 2 min: 16 jumping jacks → 16/2 = 8 jacks/min
- 5 min: 40 jumping jacks → 40/5 = 8 jacks/min
- 12 min: 96 jumping jacks → 96/12 = 8 jacks/min
- 20 min: 160 jumping jacks → 160/20 = 8 jacks/min
Answer: The person doing the most jumping jacks per minute is Kimberly (based on the first measurement, as her 9.33 jacks/min is higher than Katrina's constant 8 jacks/min).
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The person that did the most jumping jacks initially before the time started:
- Since both persons started their counts from 0 jumping jacks, the initial number of jumping jacks is the same for both at 0.
Answer: Both had 0 jumping jacks initially.
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The person showing a proportional relationship between time and # of jumping jacks:
- To determine who shows a proportional relationship, we check if the ratio of jumping jacks to time is constant:
- For Kimberly: The ratios are not constant (decreasing over time).
- For Katrina: The ratios are constant (always 8 jacks/min).
Answer: The person showing a proportional relationship between time and # of jumping jacks is Katrina.
- To determine who shows a proportional relationship, we check if the ratio of jumping jacks to time is constant:
In summary:
- The person doing the most jumping jacks per minute: Kimberly
- The person that did the most jumping jacks initially before the time started: 0
- The person showing a proportional relationship between time and # of jumping jacks: Katrina.