document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1137014>Question 1137014</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Let n be the number of oil refineries at t years since 2004. A reasonable model of the number of oil refineries is n=-3.51t+171.04.<BR>\n" );
document.write( "a. What is the​ slope? What does it mean in this​ situation?<BR>\n" );
document.write( "b. What is the​ n-intercept? What does it mean in this​ situation?<BR>\n" );
document.write( "c. Predict the number of refineries in 2019. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #754842 by </B><A HREF=/tutors/aboutme.mpl?userid=AfronPie><B>AfronPie(1)</B></A><img src=\"/images/stars/iconNewId_16x16.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=AfronPie><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=754842\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a) the slope is -3.51. It means that every year the number of oil refineries goes down by about 3 and a half.<BR>\n" );
document.write( "b) n-intercept ?<BR>\n" );
document.write( "c)In 2019, which is 15 years ahead of 2004 (t=15), the predicted number of refineries is about 118.39. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );