XYZ, Inc. uses the functions \(R(x)\) and \(E(x)\) to model their total revenue (R) and cost of selling widgets (E) at various price levels. If maximal revenue and maximal net profit are achieved at two different price levels, how much less will total revenue be if the widgets are sold at a price that will maximize net profit?

\(R(x) = -200x^2+7000x\)

\(E(x) = -2400x+84000\)

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