document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=262615>Question 262615</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)= x^2+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?\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #193435 by </B><A HREF=/tutors/aboutme.mpl?userid=dabanfield><B>dabanfield(803)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=dabanfield><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=193435\">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)= x^2+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? \r<BR>\n" );
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document.write( "A(5) = 5^2 + 5*5 + 6 so<BR>\n" );
document.write( "A(5) = 25 + 25 + 6 = 56\r<BR>\n" );
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document.write( "The area of the triangle is 1/2*base*height.\r<BR>\n" );
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document.write( "Let B be the base. Then we have \r<BR>\n" );
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document.write( "A(x) = x^2 +5x + 6 = 1/2*B*(x+3)\r<BR>\n" );
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document.write( "Multiply both sides by 2:\r<BR>\n" );
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document.write( "2*(x^2 + 5x + 6) = B*(x+3)\r<BR>\n" );
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document.write( "Factor the left side: \r<BR>\n" );
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document.write( "2*(x+3)*(x+2) = B*(x+3)\r<BR>\n" );
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document.write( "Divide both sides by (x+3)\r<BR>\n" );
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document.write( "2*(x+2) = B<BR>\n" );
document.write( "B = 2x + 4\r<BR>\n" );
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document.write( "If x=5, B = 14 </SPAN>\n" );
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