Homework Help: algebra

Posted by at on Sunday, January 24, 2010 at 12:27pm.

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 - Ms. Sue, Sunday, January 24, 2010 at 12:31pm
Total cost for 2 months is 20 + 30 + 30.
algebra - at, Sunday, January 24, 2010 at 12:32pm
so it would be $80 for two months then?
algebra - Ms. Sue, Sunday, January 24, 2010 at 12:34pm
Right.
algebra - at, Sunday, January 24, 2010 at 12:36pm
thank you that means she will be only able to get two months with her $90 then?
algebra - at, Sunday, January 24, 2010 at 12:37pm
or maybe two and a half months with her $90>?
algebra - Ms. Sue, Sunday, January 24, 2010 at 12:40pm
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 - at, Sunday, January 24, 2010 at 12:41pm
thank you
algebra - Ms. Sue, Sunday, January 24, 2010 at 1:28pm
You're welcome.

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