SOLUTION: Media Services charges $20 for a phone and $30/month for its economy plan. Fin a model that determines the totak cost, C(t), of operating a Media /services phone for t months.

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Media Services charges $20 for a phone and $30/month for its economy plan. Fin a model that determines the totak cost, C(t), of operating a Media /services phone for t months.       Log On


   

Question 224734: Media Services charges $20 for a phone and $30/month for its economy plan.
Fin a model that determines the totak cost, C(t), of operating a Media /services phone for t months.
C(t)=_________
Answer by NYC Math Tutor(4) About Me  (Show Source):
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First, you want to identify your fixed and variable costs. Your fixed cost is the purchase of the phone. This is a $20 one-time purchase. No matter how many months you need to use your phone, you will only pay this $20 once. On the other hand, you will pay $30 each month you are using the phone so this is your variable cost. Using this information, set up the equation:
C(t) = 30t + 20