A cell phone company offers two different plans. Plan A costs $84 per month for unlimited talk and text. Plan B costs $0.20 per minute plus $0.10 per text message sent. You need to purchase a plan for your teenage sister. Your sister currently uses 1,800 minutes and sends 1,650 texts each month. 1. What is your sister's total cost under each of the two plans? 2. Suppose your sister doubles her monthly usage to 3,600 minutes and sends 3.300 texts. What is your sister's total cost under each of the two plans? Total Cost Plans 1. Plan A Plan B 2. Plan A Plan B