document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1120579>Question 1120579</A>: <I><SPAN STYLE=\"word-break: break-all;\"> if s varies directly as t^2, and s=243 when t=9, find s when t is 8\r<BR>\n" );
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document.write( "a. s=216<BR>\n" );
document.write( "b.s=72<BR>\n" );
document.write( "c.s=192<BR>\n" );
document.write( "d.s=27 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #736260 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13200)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=736260\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "If you have to find the value of s for many values of t, then you will want a formula for s in terms of t.  To do that, you need to use the given information to find the constant of proportionality, as the other tutor did.<br><BR>\n" );
document.write( "For a problem like this, where you are only finding one other value of s, I think it is easier just to consider how the value of s will change, considering the change in the value of t.<br><BR>\n" );
document.write( "The t value changes fro 9 to 8; it gets multiplied by 8/9.<br><BR>\n" );
document.write( "s varies directly as t^2; so the value of s will get multiplied by (8/9)^2.<br><BR>\n" );
document.write( "243 * (8/9)^2 = 243*64/81 = 64*3 = 192<br><BR>\n" );
document.write( "The value of s when t=8 is 192. </SPAN>\n" );
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