document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1056400>Question 1056400</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 16:24:22	Create a linear model for the data and identify the coefficient of determination. <BR>\n" );
document.write( "Reference: https://s22.postimg.org/9sg2x3gip/activity_3.png <BR>\n" );
document.write( "Graph the quadratic model to determine when the total amount of stations surpasses  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=++7000+ ALIGN=MIDDLE  ALT=\"++7000+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Thank you. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #671534 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=671534\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The linear model is<BR>\n" );
document.write( "y=117.07 x+5429, when x=1 is 1997. The coefficient of determination or R is 0.989<BR>\n" );
document.write( "The quadratic model is -3.261x^2+143.16667x+5389.86<BR>\n" );
document.write( "When I graph that, the maximum is at 6961.21 and does not ever surpass 7000.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28300%2C300%2C-5%2C30%2C6000%2C7000%2C-3.261x%5E2%2B143.16667x%2B5389.86%29 ALIGN=MIDDLE  ALT=\"graph%28300%2C300%2C-5%2C30%2C6000%2C7000%2C-3.261x%5E2%2B143.16667x%2B5389.86%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "vertex x value is-b/2a=143.16667/6.522=21.95, and f(21.95)=6959.76<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28300%2C300%2C-5%2C10%2C4000%2C8000%2C117.07x%2B5429%29 ALIGN=MIDDLE  ALT=\"graph%28300%2C300%2C-5%2C10%2C4000%2C8000%2C117.07x%2B5429%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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