document.write( "Question 1033156: a gas station sells 4820 gallons of regular unleaded gasoline in a day when they charge $1.35 per gallon, whereas they sell 3861 gallons on a day they they charge $1.40 per gallon. Find a linear function that expresses gallons sold as a function of price. Use this function to predict the number of gallons sold at a price of $1.17 per gallon \n" ); document.write( "

Algebra.Com's Answer #647825 by josgarithmetic(39617) $\"\"$ $\"About$

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Identify the variables and decide which way you want them in the function.\r
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\n" ); document.write( "\n" ); document.write( "The best choice is price for the independent variable and gallons per day sold for the dependent variable. Call the ordered pair points generally (p,v).\r
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\n" ); document.write( "\n" ); document.write( "The description gives two points: (1.35, 4820) and (1.4, 3861).\r
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\n" ); document.write( "\n" ); document.write( "Using the two points for slope and choosing the point (1.35, 4820) to build the equation, the function starting from POINT-SLOPE FORM, without any further explanation, is $\"highlight%28v-4820=%28%284820-3861%29%2F%281.35-1.4%29%29%28p-1.35%29%29\"$ \r
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\n" ); document.write( "\n" ); document.write( "You simplify the equation and use it to finish answering the second part of the question. \n" ); document.write( "

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