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Mathematics 12 Online
OpenStudy (anonymous):

For her exercise today, Heather plans to both run and swim. Let r be the number of laps she runs and let s be the number of laps she swims. Each lap she runs takes her 5 minutes, and each lap she swims takes 2 her minutes. She wants to exercise for more than 45 minutes today. Using values and variables , write an inequality describing this.

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