document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=321131>Question 321131</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Area of a sail. The area in square meters for a triangular<BR>\n" );
document.write( "sail is given by A(x) = x2 + 5x + 6.<BR>\n" );
document.write( "a) Find A(5).<BR>\n" );
document.write( "b) If the height of the sail is x + 3 meters, then what is<BR>\n" );
document.write( "the length of the base of the sail? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #229980 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=229980\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Area of a sail. The area in square meters for a triangular<BR>\n" );
document.write( "sail is given by A(x) = x2 + 5x + 6.<BR>\n" );
document.write( "a) Find A(5)<BR>\n" );
document.write( "Plug into formula:<BR>\n" );
document.write( "A(x) = x^2 + 5x + 6<BR>\n" );
document.write( "A(5) = 5^2 + 5(5) + 6<BR>\n" );
document.write( "A(5) = 25 + 25 + 6<BR>\n" );
document.write( "A(5) = 56 square meters<BR>\n" );
document.write( ".<BR>\n" );
document.write( "b) If the height of the sail is x + 3 meters, then what is<BR>\n" );
document.write( "the length of the base of the sail?<BR>\n" );
document.write( "Since the sail is triangular, the area is:<BR>\n" );
document.write( "area=(1/2)bh<BR>\n" );
document.write( "x^2+5x+6 = (1/2)b(x+3)<BR>\n" );
document.write( "2x^2+10x+12 = b(x+3)<BR>\n" );
document.write( "(2x^2+10x+12)/(x+3) = b (base)\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );