A tank contains 420 liters of fluid in which 50 grams of salt is dissolved. Brine containing 1 gram of salt per liter is then pumped into the tank at a rate of 6 L/min; the well-mixed solution is pumped out at the same rate. Find the number A(t) of grams of salt in the tank at time t.

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A: Here we have to find the equation of the tangent line of the graph y=x4 at (-2, 16)

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A: I am attaching image so that you understand each and every step.

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