Use the information given in the figure below to construct a mathematical model for the number of pounds of salt x ₁(t), x₂(t), and x3(t) at time t in tanks A, B, and C, respectively. 57/0 5/0 87/0 = pure water 5 gal/min 100 gal mixture 2 gal/min mixture 7 gal/min B 100 gal mixture 1 gal/min mixture 6 gal/min C 100 gal mixture 5 gal/min

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