he figure shows the flow of traffic (in vehicles per hour) through a network of streets. (Assume a = 200 and b = 400.) X1 X3 (a) Solve this system for x₁, i = 1, 2, 3, 4. (If the system has an infinite number of solutions, express X1, X2, X3, and x4 in terms of the parameter t.) (X1, X2, X3, X4) = X4 (b) Find the traffic flow when X4 = 0. (X1, X2, X3, X4) = Need Help? (c) Find the traffic flow when X4 = 200. (X1, X2, X3, X4) = (d) Find the traffic flow when X1 = 5x2. (X1, X2, X3, X4) = Read It Watch It

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