document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1182927>Question 1182927</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 1.  A linear model describes the relationship between the weight in pounds and the age in months for Great Dane puppies:  Weight = 16.25(age in months)  -  9.5.  The model was created by using weights for puppies aged 2 to 6 months.\r<BR>\n" );
document.write( "\n" );
document.write( "a)  Use the model to estimate the weight of a puppy at 2 weeks (half a month), 1 year, and 5 years.\r<BR>\n" );
document.write( "\n" );
document.write( "b)  Does the model make sense for ages outside of 2 to 6 months?  Why? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #813092 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=813092\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> W=16.25(.5)-9.5<BR>\n" );
document.write( "=-1.375 pounds. Does not make sense, and model has been stated to be used between 2 and 6 months.<BR>\n" );
document.write( "---<BR>\n" );
document.write( "at 1 year or 12 months<BR>\n" );
document.write( "=185.5 pounds, same comment.<BR>\n" );
document.write( "---<BR>\n" );
document.write( "5 years or 60 months<BR>\n" );
document.write( "=965.5 pounds.<BR>\n" );
document.write( "-<BR>\n" );
document.write( "Weight gain after birth is often a quadratic equation where the upslope of the curve can be linear for a defined period of time, after which the model is no longer linear.  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );