document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=921182>Question 921182</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The path of a basketball can be described by the equation y = -16t2 + 18t + 7, where y is the height of the basketball and t is the time in seconds it is in the air. After the basketball is thrown, how much time passes before it passes through the basket, which is 10 feet off the ground? Round your answer to the nearest hundredth of a second.<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #558862 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=558862\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The basketball can't go through the basket while<BR>\n" );
document.write( "it is on the way up ( y increasing ). It has to reach it's<BR>\n" );
document.write( "maximum height, and then go through the basket<BR>\n" );
document.write( "on the way down ( y decreasing )<BR>\n" );
document.write( "-------------------------------<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+y+=+-16t%5E2+%2B+18t+%2B+7+ ALIGN=MIDDLE  ALT=\"+y+=+-16t%5E2+%2B+18t+%2B+7+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+10+=+-16t%5E2+%2B+18t+%2B+7+ ALIGN=MIDDLE  ALT=\"+10+=+-16t%5E2+%2B+18t+%2B+7+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+-16t%5E2+%2B+18t+-+3+=+0+ ALIGN=MIDDLE  ALT=\"+-16t%5E2+%2B+18t+-+3+=+0+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Use the quadratic formula<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+=+%28+-b+%2B-+sqrt%28++b%5E2+-+4%2Aa%2Ac+%29%29+%2F+%282%2Aa%29+ ALIGN=MIDDLE  ALT=\"+t+=+%28+-b+%2B-+sqrt%28++b%5E2+-+4%2Aa%2Ac+%29%29+%2F+%282%2Aa%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+a+=+-16+ ALIGN=MIDDLE  ALT=\"+a+=+-16+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+b+=+18+ ALIGN=MIDDLE  ALT=\"+b+=+18+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+c+=+-3+ ALIGN=MIDDLE  ALT=\"+c+=+-3+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+=+%28+-18+%2B-+sqrt%28++18%5E2+-+4%2A%28-16%29%2A%28-3%29+%29%29+%2F+%282%2A%28-16%29%29+ ALIGN=MIDDLE  ALT=\"+t+=+%28+-18+%2B-+sqrt%28++18%5E2+-+4%2A%28-16%29%2A%28-3%29+%29%29+%2F+%282%2A%28-16%29%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+=+%28+-18+%2B-+sqrt%28++324+-+192+%29%29+%2F+%28-32%29+ ALIGN=MIDDLE  ALT=\"+t+=+%28+-18+%2B-+sqrt%28++324+-+192+%29%29+%2F+%28-32%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+=+%28+-18+%2B-+sqrt%28++132+%29%29+%2F+%28-32%29+ ALIGN=MIDDLE  ALT=\"+t+=+%28+-18+%2B-+sqrt%28++132+%29%29+%2F+%28-32%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+=+%28+-18+%2B+11.489+%29+%2F+%28-32%29+ ALIGN=MIDDLE  ALT=\"+t+=+%28+-18+%2B+11.489+%29+%2F+%28-32%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+=+.2035+ ALIGN=MIDDLE  ALT=\"+t+=+.2035+\"   DISABLED_style= \"max-width:90%; height:auto;\" > sec<BR>\n" );
document.write( "This is when the basketball is on the way up, just after<BR>\n" );
document.write( "it leaves the shooters hand<BR>\n" );
document.write( "The other value for <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+ ALIGN=MIDDLE  ALT=\"+t+\"   DISABLED_style= \"max-width:90%; height:auto;\" > should be when it is going<BR>\n" );
document.write( "through the basket on the way down<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+=+%28+-18+-+11.489+%29+%2F+%28-32%29+ ALIGN=MIDDLE  ALT=\"+t+=+%28+-18+-+11.489+%29+%2F+%28-32%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+=+29.489%2F32+ ALIGN=MIDDLE  ALT=\"+t+=+29.489%2F32+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+=+.9215+ ALIGN=MIDDLE  ALT=\"+t+=+.9215+\"   DISABLED_style= \"max-width:90%; height:auto;\" > sec<BR>\n" );
document.write( "Rounded off:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+=+.92+ ALIGN=MIDDLE  ALT=\"+t+=+.92+\"   DISABLED_style= \"max-width:90%; height:auto;\" > sec<BR>\n" );
document.write( "----------------<BR>\n" );
document.write( "Here's the plot:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+graph%28+400%2C+400%2C+-.5%2C+1.5%2C+-1%2C+14%2C+-16x%5E2+%2B18x+%2B+7+%29+ ALIGN=MIDDLE  ALT=\"+graph%28+400%2C+400%2C+-.5%2C+1.5%2C+-1%2C+14%2C+-16x%5E2+%2B18x+%2B+7+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
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document.write( "</TD></TR></TABLE>\n" );