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Mathematics 7 Online
OpenStudy (anonymous):

An hour-long call to St.Louis, from Chicago, at the normal day-rate costs $12. If Amanda makes an hour-long call between 11 PM and 8 AM, when the telephone company gives a 40% discount, how much will she pay for the call? $4.80 $7 $7.20 $8.75 $16.80

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