algebra

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help please im on my final exam for algebra and i need to pass this is the second time taking it.

media services charges $20 for a phone and $30 a month for itd economy plan. the equation c=30t+20 describes the total cost c, of operating a media service phone for t months.

the total cost for two months service?
if a customer has only $90 available how many months of service can she recive?

  • algebra -

    Total cost for 2 months is 20 + 30 + 30.

  • algebra -

    so it would be $80 for two months then?

  • algebra -

    Right.

  • algebra -

    thank you that means she will be only able to get two months with her $90 then?

  • algebra -

    or maybe two and a half months with her $90>?

  • algebra -

    Services don't sell parts of months. Yes her $90 buys her the phone and two months service. She'll have $10 left over.

  • algebra -

    thank you

  • algebra -

    You're welcome.

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