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Customers of a phone company can choose between two service plans for long distance calls. The first plan has an $18 one-time activation fee and charges 10 cents a minute. The second plan has no activation fee and charges 15 cents a minute. After how many minutes of long distance calls will the costs of the two plans be equal?

  • math -

    Try to make two equations, one for each phone company.

    First plan:

    y = .10x + 18

    Second plan:

    y = .15x

    Try plugging in numbers until the two equations have the same y. If you need anymore explanations, just respond back.

    Hope I helped!

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