document.write( "Question 553799: The height of a rock dropped off a 511 foot cliff, h(t), is described by the equation \"h%28t%29=+-16t%5E2%2B511\". Find the height of the rock when t=3 seconds. \n" ); document.write( "
Algebra.Com's Answer #361065 by jim_thompson5910(35256)\"\" \"About 
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\"h%28t%29=+-16t%5E2%2B511\"\r
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\n" ); document.write( "\n" ); document.write( "\"h%283%29=+-16%283%29%5E2%2B511\"\r
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\n" ); document.write( "\n" ); document.write( "\"h%283%29=+-16%289%29%2B511\"\r
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\n" ); document.write( "\n" ); document.write( "\"h%283%29=+-144%2B511\"\r
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\n" ); document.write( "\n" ); document.write( "\"h%283%29=+367\"\r
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\n" ); document.write( "\n" ); document.write( "So the height is 367 feet.\r
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\n" ); document.write( "\n" ); document.write( "If you need more help, email me at jim_thompson5910@hotmail.com\r
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\n" ); document.write( "\n" ); document.write( "Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you\r
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