document.write( "Question 1130048: If your car get 28 miles per gallon city an 39 miles highway. You are traveling 1543 miles. An cost per fuel is average $3.00 gallon what would the trip cost? \n" ); document.write( "
Algebra.Com's Answer #746693 by josgarithmetic(39616)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "Average fuel price of  $3.00 per gallon\r\n" );
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document.write( "          Fuel Effic MPG       Dollars per Mile    Distance MILES    COST dollars\r\n" );
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document.write( "City        28                 3/28                  x               (3/28)x\r\n" );
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document.write( "Highway     39                 3/39                  y               (3/39)y\r\n" );
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document.write( "Total                                               1543\r\n" );
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\n" ); document.write( "\n" ); document.write( "The cost of the trip depends on two variables for distances x and y.
\n" ); document.write( "Total cost: \"%283%2F28%29x%2B%283%2F39%29y\"\r
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\n" ); document.write( "\n" ); document.write( "You could take this another step and use \"x%2By=1543\"
\n" ); document.write( "\"y=1543-x\"\r
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\n" ); document.write( "\n" ); document.write( "substituting that,
\n" ); document.write( "\"%283%2F28%29x%2B%283%2F39%29%281543-x%29\"----and simplify this if you want, and have the cost in terms of the city miles distance, keeping the constant total trip 1543 miles. \n" ); document.write( "
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