document.write( "Question 1202518: Suppose that the distance a car travels varies directly with the amount of gasoline it uses. A certain car uses 9 gallons of gasoline to travel 207 miles. How many miles can the car travel if it has 13 gallons of gasoline? \n" ); document.write( "
Algebra.Com's Answer #837405 by josgarithmetic(39616)\"\" \"About 
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\n" ); document.write( "the distance a car travels varies directly with the amount of gasoline it uses.
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\n" ); document.write( "\n" ); document.write( "The language clearly becomes, with these assigned variables,
\n" ); document.write( "k, variation constant
\n" ); document.write( "d, distance travel
\n" ); document.write( "x, amount of fuel used
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\n" ); document.write( "the equation \"d=kx\".\r
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\n" ); document.write( "\n" ); document.write( "The part which follows in the description is that x=9 corresponds to d=207; so you can find the value for k.\r
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\n" ); document.write( "\n" ); document.write( "Alternatively-------------
\n" ); document.write( "Notice the units for each number involved in the question.
\n" ); document.write( "13 gallons of gasoline;
\n" ); document.write( "9 gallons gasoline for 207 miles;
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\n" ); document.write( "Question is \"how many miles travel if 13 gallons...?\"
\n" ); document.write( "Begin with the 13 gallons:\r
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\n" ); document.write( "\n" ); document.write( "\"13%2Agallons%2A%28207%2F9%29%28miles%2Fgallons%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"%28%2813%2A207%29%2F9%29%2A%28%28cross%28gallons%29%2Amiles%29%2Fcross%28gallons%29%29\"\r
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