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A long-distance telephone service charges $0

Economics

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A long-distance telephone service charges $0.64 a minute for the first 20 minutes or less of a call and $0.04 per minute for each additional minute or fraction thereof. a. Complete the piecewise definition of the charge F(x) for a long-distance call lasting a minutes S(x) ; Isa Where Preview () Preview and a Preview 6. Find lim Fir) Preview