Mathematics, 30.10.2019 00:31 Browardlovesangel
Suppose you have a gift certificate worth $20 for one long-distance phone call. if the charge is $1.10 for the first minute and $0.42 for each additional minute , what is the longest that you can talk?
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Suppose you have a gift certificate worth $20 for one long-distance phone call. if the charge is $1....
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