document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1175266>Question 1175266</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An object dropped from a height of 600 feet has a height h(t) after t seconds given by h(t) = 600 − 16t². Express t as a function of height h and find the time it takes to reach a height of 400 feet. Be sure to include a graph of h(t) and your new function, and use this graph to explain how you know your answer is correct. You may use graphing calculator to make this graph.\r<BR>\n" );
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document.write( "I really need a more detailed explanation in words too, I'd really appreciate this!!!<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 #800882 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=800882\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> An object dropped from a height of 600 feet has a height h(t) after t seconds given by h(t) = 600 − 16t².<BR>\n" );
document.write( " Express t as a function of height h and find the time it takes to reach a height of 400 feet.<BR>\n" );
document.write( "h = 600 - 16t^2<BR>\n" );
document.write( "16t^2 = 600 - h<BR>\n" );
document.write( "divide eq by 16<BR>\n" );
document.write( "t^2 =  37.5 - <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h%2F16 ALIGN=MIDDLE  ALT=\"h%2F16\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Find square root of both sides<BR>\n" );
document.write( "t = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%2837.5+-%28h%2F16%29%29 ALIGN=MIDDLE  ALT=\"sqrt%2837.5+-%28h%2F16%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "find t when h=400<BR>\n" );
document.write( "t = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%2837.5+-%28400%2F16%29%29 ALIGN=MIDDLE  ALT=\"sqrt%2837.5+-%28400%2F16%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "t = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%2837.5+-+25%29 ALIGN=MIDDLE  ALT=\"sqrt%2837.5+-+25%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "t = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%2812.5%29 ALIGN=MIDDLE  ALT=\"sqrt%2812.5%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "t = 3.535 sec to reach a height of 400 ft<BR>\n" );
document.write( ":<BR>\n" );
document.write( " Be sure to include a graph of h(t) and your new function,<BR>\n" );
document.write( "graph of f(x) = 600-16x^2, green line is 400ft right above the 3.5 sec<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+graph%28+300%2C+200%2C+-8%2C+8%2C+-200%2C+700%2C+600-16x%5E2%2C+400%29+ ALIGN=MIDDLE  ALT=\"+graph%28+300%2C+200%2C+-8%2C+8%2C+-200%2C+700%2C+600-16x%5E2%2C+400%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "graph of new function t(x) = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%2837.5-%28x%2F16%29%29 ALIGN=MIDDLE  ALT=\"sqrt%2837.5-%28x%2F16%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=+graph%28+300%2C+200%2C+-100%2C+700%2C+-6%2C+10%2C+sqrt%2837.5-%28x%2F16%29%29%2C+3.5%29+ ALIGN=MIDDLE  ALT=\"+graph%28+300%2C+200%2C+-100%2C+700%2C+-6%2C+10%2C+sqrt%2837.5-%28x%2F16%29%29%2C+3.5%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "green line is 3.5 sec right above 400 ft\r<BR>\n" );
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document.write( " and use this graph to explain how you know your answer is correct.<BR>\n" );
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