
Sam Z. answered 04/26/19
Math/Science Tutor
xr+ys=40
4r+3s=40
Kiaira W.
asked 04/26/19For her exercise today, Christine 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 4 minutes, and each lap she swims takes her 3 minutes. She wants to exercise for more than 40 minutes today.
Sam Z. answered 04/26/19
Math/Science Tutor
xr+ys=40
4r+3s=40
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