Mathematics, 23.03.2021 09:30, Cupcake589

A phone company offers two monthly charge plans. In Plan A, the customer pays a monthly fee of $13.20 and then an additional 4 cents per minute of use. In Plan B, there is no monthly fee, but the customer pays 6 cents per minute of use. For what amounts of monthly phone use will Plan A cost at least as much as Plan B?
Use m for the number of minutes of phone use in a month, and solve your inequality for m.

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A phone company offers two monthly charge plans. In Plan A, the customer pays a monthly fee of $13.2...