Question

Media service charges $30 for a phone and $20 a month for its economy plan. the equation c= 20t+30 describes the toatl cost,c, of operating a media services phone for t months. the toatl cost for 8 months of service is$... If a customer has only $80 avaliable, how many months of service can she receive?

Answer 1

With an economy plan, a customer with only 80$ avaliable is limited to only 2 months. Why? Because when we plug it in, 20(2) + 30 = 70. If you try 20(3) + 30 = 90. So only 2 months of service.

Answer 2

They can get 2 and half months of service. The total cost for 8 months of service is $190.