document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1058765>Question 1058765</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In 1950 the average global temperature was 57.2 degrees F. Since that year the temperature has risen at a rate of .05 percent per year. Some estimates claim that the polar ice caps could melt if the average global temperature were raised 5 degrees. If the current growth rate remains the same what year would the polar ice caps melt?\r<BR>\n" );
document.write( "\n" );
document.write( "(0.0005*57.2)/5 + 1950<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #673899 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=673899\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In 1950 the average global temperature was 57.2 degrees F.<BR>\n" );
document.write( " Since that year the temperature has risen at a rate of .05 percent per year.<BR>\n" );
document.write( " Some estimates claim that the polar ice caps could melt if the average global temperature were raised 5 degrees.<BR>\n" );
document.write( " If the current growth rate remains the same, what year would the polar ice caps<BR>\n" );
document.write( " melt?<BR>\n" );
document.write( ":<BR>\n" );
document.write( "let y = no. of years for temp to rise 5 degrees to 62.2 degrees<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=57.2%2A%281.0005%5Ey%29+=+62.2 ALIGN=MIDDLE  ALT=\"57.2%2A%281.0005%5Ey%29+=+62.2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1.0005%5Ey+=+62.2%2F57.2 ALIGN=MIDDLE  ALT=\"1.0005%5Ey+=+62.2%2F57.2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "using natural logs<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y%2Aln%281.0005%29+=+ln%2862.2%2F57.2%29 ALIGN=MIDDLE  ALT=\"y%2Aln%281.0005%29+=+ln%2862.2%2F57.2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "find the logs<BR>\n" );
document.write( " y * .0005 = .0838<BR>\n" );
document.write( " y = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.0838%2F.0005 ALIGN=MIDDLE  ALT=\".0838%2F.0005\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( " y = 167.6 years<BR>\n" );
document.write( "\"If the current growth rate remains the same, what year would the polar ice caps<BR>\n" );
document.write( " melt?\"<BR>\n" );
document.write( "1950 + 167.6 = 2117.6 ~ the year 2117 this would occur </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );