Media Services charges $40 for a phone and $20/month for its economy plan.?
The equation c=20t+40 describes the total cost, c, of operating a Media Services phone for t months. The total cost for 8 months of service is ____________________. If a customer has only $90 available, how many months of sevice can she receive?
The equation c=20t+40 describes the total cost, c, of operating a Media Services phone for t months. The total cost for 8 months of service is ____________________. If a customer has only $90 available, how many months of sevice can she receive?