document.write( "Question 144142: OOPPPSS! I no i said the last one was my last one but I cam across another one that I do not understand how to do correctly. Can you please help it is a word problem?\r
\n" ); document.write( "\n" ); document.write( "A cellular phone company offers a contract for which the cost C, in dollars, of t minutes of telephoning is given by C=0.25(t-400) + 44.95 where it is assumed that t>_400 minutes. What times will keep cost between $91.20 and $114.70.\r
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Algebra.Com's Answer #104905 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
\"C=0.25%28t-400%29+%2B+44.95\" Start with the given equation\r
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\n" ); document.write( "\n" ); document.write( "\"91.20%3C=0.25%28t-400%29+%2B+44.95%3C=114.70\" Set the right side greater than or equal to than the lower endpoint, but less than or equal to the higher endpoint\r
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\n" ); document.write( "\n" ); document.write( "\"91.20%3C=0.25t-100+%2B+44.95%3C=114.70\" Distribute\r
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\n" ); document.write( "\n" ); document.write( "\"91.20%3C=0.25t-55.05%3C=114.70\" Combine like terms\r
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\n" ); document.write( "\n" ); document.write( "\"146.25%3C=0.25t%3C=169.75\" Add 55.05 to all sides\r
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\n" ); document.write( "\n" ); document.write( "\"585%3C=t%3C=679\" Divide all sides by 0.25 to isolate t\r
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\n" ); document.write( "\n" ); document.write( "So if the time is between 585 and 679 minutes, then the cost will be between $91.20 and $114.70.
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