document.write( "Question 1025908: The average fuel consumption of vehicles driving the roads can be modeled by\r \n" );
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document.write( "F(t) = 0.425t2 − 16.442t + 840.325\r \n" );
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document.write( "where F(t) represents the gallons per vehicle per year t years since 1970\r \n" );
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document.write( "(a) What was the average fuel consumption in 1975? (Round your answer to two decimal places. Include units with your numerical answers.) \n" );
document.write( "According to the model, in 1975 the average fuel consumption per vehicle per year was_______\r \n" );
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document.write( "(b) What was the average fuel consumption in 1985? (Round your answer to two decimal places. Include units with your numerical answers.) \n" );
document.write( "According to the model, in 1985 the average fuel consumption per vehicle per year was______\r \n" );
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document.write( "(c) Find the vertex for this model and explain its meaning. (Round your answer to two decimal places. Include units with your numerical answers.) \r \n" );
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document.write( "The vertex is \n" );
document.write( "(t, F) =( ), which means that in________the average fuel consumption per vehicle per year was_______. \n" );
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