Mathematics, 16.12.2020 16:20 Yskdl

A set of weights includes a 4 lb barbell and 6 pairs of weight plates. Each pair of plates weighs 20 lb. If x pairs of plates are added to the barbell, the total weight of the barbell and plates in pounds can be represented by f(x) = 20x + 4.

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A set of weights includes a 4 lb barbell and 6 pairs of weight plates. Each pair of plates weighs 20...