Plan A has a monthly fee of $15 with a charge of $0.08 per text. Plan B has a monthly fee of $3 with a charge of $0.12 per text. a. Express the monthly cost for plan A, f, as a function of the number of text messages in a month, x. b. Express the monthly cost for plan B, g, as a function of the number of text messages in a month, x. c. For how many text messages will the costs for the two plans be the same?

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