Question: Graph (x) = 2 x + 1| + 4|x - 5| -20 with a graphing calculator in the window [-10, 10] by [-15, 30]. Use

Graph ƒ(x) = 2 x + 1| + 4|x - 5| -20 with a graphing calculator in the window [-10, 10] by [-15, 30]. Use the graph and the function to determine the x-values of all extrema.

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