document.write( "Question 239549: The cost of producing 4 units is $204.80. The cost of producing 8 units is $209.60. How much does it cost to produce 12 units? \n" ); document.write( "
Algebra.Com's Answer #175816 by checkley77(12844)\"\" \"About 
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4x+y=204.80
\n" ); document.write( "-(8x+y=209.60) subtract
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\n" ); document.write( "-4x=-4.8
\n" ); document.write( "x=-4.8/-4
\n" ); document.write( "x=1.2 multiplier for each unit produced.
\n" ); document.write( "4*1.2+y=204.80
\n" ); document.write( "4.8+y=204.80
\n" ); document.write( "y=204.80-4.8
\n" ); document.write( "y=200 operating/overhead cost.
\n" ); document.write( "Proof:
\n" ); document.write( "8*1.2+200=209.60
\n" ); document.write( "9.6+200=209.60
\n" ); document.write( "209.60=209.60
\n" ); document.write( "12*1.2+200=14.4+200=$214.10 cost to produce 12 units.
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