Shantain's cell phone plan costs $30 per month for unlimited calling plus $0.20 per text message. Write a linear equation to represent the monthly cost of this phone plan. (Use the form y=mx+b, with lowercase letters, NO commas, and NO spaces)
Use the equation you wrote in #7 to answer the following: Shantain received a bill this month for $178.20. How many text messages was she charged for?
Use the equation you wrote in #7 to answer the following: How much will Shantain's cell phone bill be next month, if she sends 200 text messages?
Use the equation you wrote in #7 to answer the following: How much will Shantain's cell phone bill be next month, if she sends 200 text messages?