document.write( "Question 253923: Here's the question\r
\n" ); document.write( "\n" ); document.write( "It costs $350 for a case of 150 jars of modeling clay. It costs $672 for a case of 450 jars of modeling clay.\r
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\n" ); document.write( "\n" ); document.write( "What is the unit price for a jar in the case of 150 jars?\r
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\n" ); document.write( "\n" ); document.write( "What is the unit price for a jar in the case of 450 jars?\r
\n" ); document.write( "\n" ); document.write( "Which case of jars of modeling clay is the better buy?\r
\n" ); document.write( "\n" ); document.write( "Please help me set up the proportion and answer.
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Algebra.Com's Answer #186284 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
Here's the question
\n" ); document.write( "It costs $350 for a case of 150 jars of modeling clay. It costs $672 for a case of 450 jars of modeling clay. \r
\n" ); document.write( "\n" ); document.write( "What is the unit price for a jar in the case of 150 jars? \r
\n" ); document.write( "\n" ); document.write( "What is the unit price for a jar in the case of 450 jars?
\n" ); document.write( "Which case of jars of modeling clay is the better buy?
\n" ); document.write( "Please help me set up the proportion and answer.
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\n" ); document.write( "You have two points: (150,350) and (450,672)
\n" ); document.write( "slope: (672-350)/(450-150) = 322/300 = 1.073
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\n" ); document.write( "What is the unit price for a jar in the case of 150 jars?
\n" ); document.write( "350/150 = $2.333333
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\n" ); document.write( "What is the unit price for a jar in the case of 450 jars?
\n" ); document.write( "672/450 = $1.49333..
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\n" ); document.write( "Which case of jars of modeling clay is the better buy?
\n" ); document.write( "The case with 450 jars is the better buy.
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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