document.write( "Question 1154557: The height (in centimeters) of a candle is a linear function of the amount of time (in hours) it has been burning. When graphed, the function gives a line with a slope of -0.5. See the figure below.\r
\n" ); document.write( "\n" ); document.write( "Suppose that the height of the candle after 18 hours is 15 centimeters. What was the height of the candle after 15 hours?
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Algebra.Com's Answer #777004 by ikleyn(52835)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "            In his solution, @josmicely made several errors on the way.\r
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\n" ); document.write( "\n" ); document.write( "            His check is  FALSE,  also,  and is not  \"the check\",  at all.\r
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\n" ); document.write( "\n" ); document.write( "            For correct solution see the post by Alan.\r
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\n" ); document.write( "\n" ); document.write( "The correct answer is\r
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document.write( "    after 15 hours, the height of the candle was 16.5 cm.\r\n" );
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\n" ); document.write( "\n" ); document.write( "It is clear practically without calculations.\r
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\n" ); document.write( "\n" ); document.write( "In  3 hours between  15  hours and  18  hours,  the height of the candle decreases by  0.5*3 = 1.5 cm.\r
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\n" ); document.write( "\n" ); document.write( "Therefore,  at the  15  hours time moment,  the height of the candle was  15 + 1.5 = 16.5 cm.     ANSWER\r
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\n" ); document.write( "\n" ); document.write( "@josmicely, please do not consider my post as a trial to make a war with you.\r
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\n" ); document.write( "\n" ); document.write( "Simply, at this forum we should have a protection service for visitors from errors of tutors ---\r
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\n" ); document.write( "\n" ); document.write( "so, I perform this protection service . . . from time to time . . . \r
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