document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=326454>Question 326454</A>: <I><SPAN STYLE=\"word-break: break-all;\"> y varies directly as the square of R. If y = 12 when R = 2, when R =4, y = </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #233726 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=233726\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  y varies directly as the square of R. If y = 12 when R = 2, when R =4, y =<BR>\n" );
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document.write( "y = kR^2<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Solve for k using y=12 when R = 2<BR>\n" );
document.write( "12 = k(2^2)<BR>\n" );
document.write( "k = 3<BR>\n" );
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document.write( "General equation:<BR>\n" );
document.write( "y = 3R^2<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Solve for y when R = 4.<BR>\n" );
document.write( "y = 3*4^2<BR>\n" );
document.write( "y = 3*16<BR>\n" );
document.write( "y = 48<BR>\n" );
document.write( "===============<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );