document.write( "Question 808196: the price of refrigerator A is 600 and the price of refrigerator B Is 1200 the cost o electricity needed to operate the refrigerator is 50 per year for refrigerator A and 40 for refrigerator B what is the equation of refrigerator A and B ? \n" ); document.write( "
Algebra.Com's Answer #486841 by JBarnum(2146)\"\" \"About 
You can put this solution on YOUR website!
not real sure what your asking but:\r
\n" ); document.write( "\n" ); document.write( "total cost of refrigerator A = x
\n" ); document.write( "total cost of refrigerator B = z
\n" ); document.write( "amount of years = y
\n" ); document.write( "\"x=600%2B50y\"
\n" ); document.write( "\"z=1200%2B40y\"\r
\n" ); document.write( "\n" ); document.write( "if there is an amount of years to which refrigerator would be cheapest you could solve for each cost and find out.
\n" ); document.write( "say 10 years which would be cheapest?
\n" ); document.write( "\"highlight%28x=1100%29\"
\n" ); document.write( "\"z=1600\"
\n" ); document.write( "say 50yrs?
\n" ); document.write( "\"highlight%28x=3100%29\"
\n" ); document.write( "\"z=3200\"
\n" ); document.write( "say 100years?
\n" ); document.write( "\"x=5600\"
\n" ); document.write( "\"highlight%28z=5200%29\"
\n" ); document.write( "
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