document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=875786>Question 875786</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A gardener is making a triangular planting, with 46 plants in the front row, 41 in the second row, 36 in the third row, and so on. If the pattern is consistent, how many plants are there altogether?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #528979 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=528979\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> an = a + (n - 1)d<BR>\n" );
document.write( "1 = 41 + (n - 1)-5<BR>\n" );
document.write( "-40/-5=n-1<BR>\n" );
document.write( "8=n-1<BR>\n" );
document.write( "n=9\r<BR>\n" );
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document.write( "S = ½(a + an)n<BR>\n" );
document.write( "S = ½(41 + 1)9<BR>\n" );
document.write( "S=1/2(42)*9<BR>\n" );
document.write( "s=21*9<BR>\n" );
document.write( "s=189 plants altogether\r<BR>\n" );
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document.write( " </SPAN>\n" );
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