SOLUTION: media services charges $20 for a phone and 30/month for it's economy plan. the equation C=30t+20 describes the total cost, c, of operatinga media services phone for t months. the

Algebra ->  Customizable Word Problem Solvers  -> Finance -> SOLUTION: media services charges $20 for a phone and 30/month for it's economy plan. the equation C=30t+20 describes the total cost, c, of operatinga media services phone for t months. the      Log On

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Question 147304: media services charges $20 for a phone and 30/month for it's economy plan. the equation C=30t+20 describes the total cost, c, of operatinga media services phone for t months. the total cost for 2 mos service is? if a customer only has $90 available,how many mos can she recieve?
Answer by vleith(2983) About Me  (Show Source):
You can put this solution on YOUR website!
C%28t%29=30t%2B20+ is the given equation.
What is the cost at 2 months? That is asking, what is C(2)?
C%282%29+=+30%2A%282%29+%2B+20+
C%282%29+=+60+%2B+20+
C%282%29+=+80+ dollars
Is the client has $90, she can only get 2 months of service. Keep the other $10 for something else.