document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=826966>Question 826966</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The sales of lawn mowers t years after a particular model is introduced given by the function y=5500ln(9t+4), where y is the number of mowers sold. How many mowers will be sold 4.5 years after a model is introduced? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #498505 by </B><A HREF=/tutors/aboutme.mpl?userid=jsmallt9><B>jsmallt9(3758)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jsmallt9><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=498505\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Just use your calculator. (See the postscript if your calculator does not have a button for \"ln\".)<BR>\n" );
document.write( "y = 5500ln(9t+4)<BR>\n" );
document.write( "If t = 4.5:<BR>\n" );
document.write( "y = 5500ln(9(4.5)+4)<BR>\n" );
document.write( "Simplifying...<BR>\n" );
document.write( "y = 5500ln(40.5+4)<BR>\n" );
document.write( "y = 5500ln(44.5)<BR>\n" );
document.write( "y = 5500*3.7955 (rounded to 4 places)<BR>\n" );
document.write( "y = 20875.25<BR>\n" );
document.write( "So there will be approximately 20900 mowers sold after 4.5 years.<br><BR>\n" );
document.write( "P.S. If your calculator does not have a button for \"ln\" (that's \"el-en\")...<ul><li>... but it does have a \"log\" button, then use:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=log%28%2844.5%29%29%2Flog%28%282.71828%29%29 ALIGN=MIDDLE  ALT=\"log%28%2844.5%29%29%2Flog%28%282.71828%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "instead of<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ln%2844.5%29 ALIGN=MIDDLE  ALT=\"ln%2844.5%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ></li><li>... and your calculator does not have a \"log\" button either, then use another calculator. Some options are:<ul><li>An online calculator. For example, Google has one. Just do a Google search on \"online calculator\" and it will show you a calculator (and a list of other available online calculators).</li><li>Your computer's calculator. Windows includes a calculator program and I assume many other systems have calculator programs, too. In Windows the calculator program is often found in the \"Accessories\" folder. When you open it, it usually shows a very basic calculator. But if you click on the \"View\" menu and select the \"Scientific\" option, then the calculator turns into a much more sophisticated one (which has \"ln\" and \"log\" buttons among many others).</li><li>A spreadsheet program, like Excel, on your computer. It may have the ability to calculate logarithms.</li></ul></li></ul> </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );