document.write( "Question 582171: The number of horsepower, H, needed to overcome a wind drag on an automobile is given by H=0.005s^2 + 0.007s - 0.031, where s is the speed of the car in miles per hour. At what speed will the car need to travel to use 200 horsepower to overcome the wind drag?
\n" ); document.write( "I tried this several ways and still came up with 199.32 miles per hour which my teacher says is wrong.
\n" ); document.write( "Please help. \n" ); document.write( "
Algebra.Com's Answer #371972 by stanbon(75887)\"\" \"About 
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The number of horsepower, H, needed to overcome a wind drag on an automobile is given by H=0.005s^2 + 0.007s - 0.031, where s is the speed of the car in miles per hour. At what speed will the car need to travel to use 200 horsepower to overcome the wind drag?
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\n" ); document.write( "200 = 0.005s^2 + 0.007s - 0.031
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\n" ); document.write( "Multiply thru by 1000 to get: 5s^2 + 7s - 31 = 200000
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\n" ); document.write( "5s^2 + 7s - 200031 = 0
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\n" ); document.write( "I graphed it and got s = 199.32
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "
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