# algebra

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?

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

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2. so it would be \$80 for two months then?

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3. Right.

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

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

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

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7. thank you

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8. You're welcome.

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