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Mathematics, 24.10.2021 21:00 adanrodriguez8400

Tom purchased international calling cards before traveling abroad. He bought a 60-minute card for $9.99, a 90-minute card for $14.29, a 100-minute card for $17.99, and a 200-minute card for $29.49. After using all of his calling cards, Tom used his mobile phone for 38 minutes at a rate of $2.99/minute.

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Tom purchased international calling cards before traveling abroad. He bought a 60-minute card for $9...
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