document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1014428>Question 1014428</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In 1950&#8203;, there were 2247,982 immigrants admitted to a country. In 2001&#8203;, the number was 1,003,216.<BR>\n" );
document.write( "a. Assuming that the change in immigration is&#8203; linear, write an equation expressing the number of&#8203; immigrants, y, in terms of&#8203; t, the number of years after 1900.<BR>\n" );
document.write( "b. Use your result in part a to predict the number of immigrants admitted to the country in 2018.<BR>\n" );
document.write( "c. Considering the value of the&#8203; y-intercept in your answer to part a&#8203;, discuss the validity of using this equation to model the number of immigrants throughout the entire 20th century. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #630733 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=630733\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Use the general point-slope formula<BR>\n" );
document.write( "Plot number of immigrants on the vertical axis<BR>\n" );
document.write( "Plot time in years on the horizontal axis<BR>\n" );
document.write( "-----------------------<BR>\n" );
document.write( "(a)<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+y+-+1003216+%29+%2F+%28+t+-+51+%29+=+%28+2247982+-+1003216+%29+%2F+%28+0+-+51+%29+ ALIGN=MIDDLE  ALT=\"+%28+y+-+1003216+%29+%2F+%28+t+-+51+%29+=+%28+2247982+-+1003216+%29+%2F+%28+0+-+51+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+y+-+1003216+%29+%2F+%28+t+-+51+%29+=+1244766+%2F+%28+-51+%29+ ALIGN=MIDDLE  ALT=\"+%28+y+-+1003216+%29+%2F+%28+t+-+51+%29+=+1244766+%2F+%28+-51+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+y+-+1003216+%29+%2F+%28+t+-+51+%29+=+-24407.176+ ALIGN=MIDDLE  ALT=\"+%28+y+-+1003216+%29+%2F+%28+t+-+51+%29+=+-24407.176+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+y+-+1003216+=+-24407.176%2A%28+t+-+51+%29+ ALIGN=MIDDLE  ALT=\"+y+-+1003216+=+-24407.176%2A%28+t+-+51+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+y+-+1003216+=+-24407.176t+%2B+1244765.9+ ALIGN=MIDDLE  ALT=\"+y+-+1003216+=+-24407.176t+%2B+1244765.9+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+y+=+-24407.176t+%2B+1244765.9+%2B+1003216+ ALIGN=MIDDLE  ALT=\"+y+=+-24407.176t+%2B+1244765.9+%2B+1003216+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+y+=+-24407.176t+%2B+2247981.9+ ALIGN=MIDDLE  ALT=\"+y+=+-24407.176t+%2B+2247981.9+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "-----------------------<BR>\n" );
document.write( "(b)<BR>\n" );
document.write( "2018 is 68 years after 1950<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+y+=+-24407.176t+%2B+2247981.9+ ALIGN=MIDDLE  ALT=\"+y+=+-24407.176t+%2B+2247981.9+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+y+=+-24407.176%2A68+%2B+2247981.9+ ALIGN=MIDDLE  ALT=\"+y+=+-24407.176%2A68+%2B+2247981.9+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+y+=+-1659687.9+%2B+2247981.9+ ALIGN=MIDDLE  ALT=\"+y+=+-1659687.9+%2B+2247981.9+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+y+=+588294+ ALIGN=MIDDLE  ALT=\"+y+=+588294+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "-------------------<BR>\n" );
document.write( "(c)<BR>\n" );
document.write( "Is that 20th century or 21st century?<BR>\n" );
document.write( "21st makes more sense to me.<BR>\n" );
document.write( "2100 would be 150 yrs after 1950<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+y+=+-24407.176t+%2B+2247981.9+ ALIGN=MIDDLE  ALT=\"+y+=+-24407.176t+%2B+2247981.9+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+y+=+-24407.176%2A150+%2B+2247981.9+ ALIGN=MIDDLE  ALT=\"+y+=+-24407.176%2A150+%2B+2247981.9+\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+y+=+-3661076.4+%2B+2247981.9+ ALIGN=MIDDLE  ALT=\"+y+=+-3661076.4+%2B+2247981.9+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+y+=+-1413094.5+ ALIGN=MIDDLE  ALT=\"+y+=+-1413094.5+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "The population can't be negative, so the<BR>\n" );
document.write( "formula doesn't work all the way<BR>\n" );
document.write( "to the end of the 21st century </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );