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QUESTION
The function f(x) = 5x + 400 models the estimated weekly income of a small time business, f, in terms of the number of costumers they have, x.
The function f(x) = 5x + 400 models the estimated weekly income of a small time business, f, in terms of the number of costumers they have, x. If Arthur had 25 costumers, what would be his estimated weekly income?
