document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=95647>Question 95647</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I hope I put the correct type of problem in my title.  I am taking an online class in College Algebra and I can't figure what they are asking for in the assignments.  It has been 30 years since I have done algebra.  Please help me with this problem.  Thank you in advance.  I did solve some of the questions, I think they are right. I didn't know how to get c & d.<BR>\n" );
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document.write( "The path of a falling object is given by the function   where  represents the initial velocity in ft/sec and  represents the initial height in feet. \r<BR>\n" );
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document.write( "a)	If a rock is thrown upward with an initial velocity of 64 feet per second from the top of a 25-foot building, write the height (s) equation using this information.\r<BR>\n" );
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document.write( "	Typing hint:  Type t-squared as t^2<BR>\n" );
document.write( "Answer: s=-16t^2+64t+25\r<BR>\n" );
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document.write( "b)	How high is the rock after 1 second?<BR>\n" );
document.write( "	Answer:s=73	<BR>\n" );
document.write( "	Show your work here: <BR>\n" );
document.write( "	S=-16(1^2)+64(1)+25<BR>\n" );
document.write( "	S=-16+64+25<BR>\n" );
document.write( "	S=73\r<BR>\n" );
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document.write( "c)	After how many seconds will the graph reach maximum height? <BR>\n" );
document.write( "	Answer: <BR>\n" );
document.write( "	Show your work here:\r<BR>\n" );
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document.write( "d)      What is the maximum height?<BR>\n" );
document.write( "        Answer:<BR>\n" );
document.write( "        Show your work here: </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #69691 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=69691\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a) If a rock is thrown upward with an initial velocity of 64 feet per second from the top of a 25-foot building, write the height (s) equation using this information. <BR>\n" );
document.write( "Typing hint: Type t-squared as t^2<BR>\n" );
document.write( "Answer: s(t)=-16t^2+64t+25 <BR>\n" );
document.write( "Correct<BR>\n" );
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document.write( "b) How high is the rock after 1 second?<BR>\n" );
document.write( "Answer:s=73 <BR>\n" );
document.write( "Show your work here: <BR>\n" );
document.write( "S(1)=-16(1^2)+64(1)+25<BR>\n" );
document.write( "S(1)=-16+64+25<BR>\n" );
document.write( "S(1)=73 ft. <BR>\n" );
document.write( "Correct<BR>\n" );
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document.write( "c) After how many seconds will the graph reach maximum height? <BR>\n" );
document.write( "Answer: <BR>\n" );
document.write( "Your height function is a quadratic with a=-16, b= 64 , c=25<BR>\n" );
document.write( "The maximum height occurs when t=-b/2a = -64/(2*-16) = 2 seconds<BR>\n" );
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document.write( "d) What is the maximum height?<BR>\n" );
document.write( "Answer:<BR>\n" );
document.write( "Show your work here:<BR>\n" );
document.write( "Find S(2) which is the height after 2 seconds<BR>\n" );
document.write( "S(2) = -16(2^2)+64(2)+25 <BR>\n" );
document.write( "S(2) = -64+128+25 = 89 ft<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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