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Mathematics 12 Online
OpenStudy (anonymous):

1. You are choosing between two long distance telephone plans. Plan A has a monthly fee of $30.00 with a charge of $0.05 per minute for all long distance calls. Plan B has a monthly fee of $5.00 with a charge of $0.15 per minute for all long distance calls. a. For how many minutes of a long distance calls will the costs for the two plans be the same? b. What will the cost be for each plan? c. If you make approximately 10 long distance calls per month, each averaging 25 minutes, which play would you select?

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