document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1195183>Question 1195183</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Suppose that the weight (in pounds) of an airplane is a linear function of the total amount of fuel (in qallons) in its tank. When graphed, the function gives a line<BR>\n" );
document.write( "with a slope of 5.5. See the figure below.<BR>\n" );
document.write( "With 47 gallons of fuel in its tank, the airplane has a weight of 2258.5 pounds. What is the weight of the plane with 13 gallons of fuel in its tank?<BR>\n" );
document.write( "2258.5<BR>\n" );
document.write( "Airplane<BR>\n" );
document.write( "weight<BR>\n" );
document.write( "(in pounds)<BR>\n" );
document.write( "pounds<BR>\n" );
document.write( "×<BR>\n" );
document.write( "S<BR>\n" );
document.write( "P<BR>\n" );
document.write( "Amount of fuel </SPAN>\n" );
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document.write( "The weight is a linear function of the amount of fuel; the slope of 5.5 means each gallon of fuel adds 5.5 pounds to the weight.<br><BR>\n" );
document.write( "The difference between 47 gallons and 13 gallons is 34 gallons; at 5.5 pounds per gallon, that is 34(5.5) = 187 pounds.<br><BR>\n" );
document.write( "The weight with 47 gallons of fuel is 2258.5 pounds, so the weight with 13 gallons of fuel is 2258.5-187 = 2071.5.<br><BR>\n" );
document.write( "ANSWER: 2071.5 pounds<br><BR>\n" );
document.write( " </SPAN>\n" );
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