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Mathematics, 14.12.2021 01:00 nemorinavory3832
An overseas phone call is charged at one rate (a fixed amount) for the first minute and at a different rate for each additional minute. If a 7 minute call costs $10, and a 4 minute call costs $6.40, find each rate.
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An overseas phone call is charged at one rate (a fixed amount) for the first minute and at a differe...
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