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Mathematics, 22.01.2020 07:31 wwwvio7251

César has relatives living in both the united states and mexico.
he is given a prepaid phone card worth $50 for his birthday. the
table of values shows combinations of minutes for calls within the
united states, x, and calls to mexico, y, that expend his $50 prepaid
phone card.

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César has relatives living in both the united states and mexico.
he is given a prepaid phone c...
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