f(x) = 7x-21 Place the steps for finding f(z) in the correct order. (x + 21)...

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f(x) = 7x-21 Place the steps for finding f(z) in the correct order. (x + 21) = 7y x = 7y 7y-21 x + 3 = y y = 7x-21 x+21=7y x + 3 = f(x), where x 0 x = 7y - 21 (221) = f(x), where > f(x) = 7x-21 Place the steps for finding f(z) in the correct order. (x + 21) = 7y x = 7y 7y-21 x + 3 = y y = 7x-21 x+21=7y x + 3 = f(x), where x 0 x = 7y - 21 (221) = f(x), where >