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Mathematics 17 Online
OpenStudy (anonymous):

Emma wants to compare some cell phone plans by graphing their cost per text message. Mobilama charges a flat rate of $30 for unlimited texts. Celly-On-The-Go has no set-up charge, but it does charge $0.10 per text. Ringit Wireless only charges $0.05 per text, but it has an account charge of $15. Explain to Emma how she can graph these cell phone plans and describe what key features of the graphs she should consider when making a decision. Please help I will give medals

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