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Mathematics, 19.11.2020 17:50 rfultz27

A customer is comparing the costs of two cell phone plans. In Plan A, he will pay $0.15 per call and there is no monthly fee. In Plan B, he will pay $0.08 per call, but there is a monthly fee of $4.50. What is the greatest number of calls c he can make in one month for Plan A to remain less expensive than Plan B?

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