document.write( "Question 1062666: When bottles of water cost $.80 per bottle at softball games, 200 bottles were sold. When the price was raised to $1.00 per bottle, only 150 bottles were sold. Determine the number of bottles of water sold if the price was $.90 per bottle.\r
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Algebra.Com's Answer #677620 by josgarithmetic(39618)\"\" \"About 
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Find the line containing the two points, (0.8, 200), and (1, 150). What is y when x=0.9 ?\r
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\n" ); document.write( "\n" ); document.write( "\"y-150=%28%28150-200%29%2F%281-0.8%29%29%28x-1%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"y-150=%28-50%2F0.2%29%28x-1%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"y-150=-250x%2B250\"\r
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\n" ); document.write( "\n" ); document.write( "\"highlight%28y=-250x%2B400%29\"
\n" ); document.write( "now let x=0.9 and find y.
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