document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=941587>Question 941587</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The atmospheric pressure p in pounds per square inch (psi) is given by P=14.7e^0.21a<BR>\n" );
document.write( "Where a is the altitude above sea level (in miles). If a city has an atmospheric pressure of 13.25 psi, what is the altitude? (1mile = 5,280 ft. Round the answer to the nearest foot. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #573984 by </B><A HREF=/tutors/aboutme.mpl?userid=macston><B>macston(5194)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=macston><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=macston><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=573984\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P=14.7e%5E0.21a ALIGN=MIDDLE  ALT=\"P=14.7e%5E0.21a\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Solve the equation for a:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%2F14.7=e%5E-.21a ALIGN=MIDDLE  ALT=\"P%2F14.7=e%5E-.21a\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "Natural log of e is one, so:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ln%28P%2F14.7%29=%28-0.21a%29%281%29 ALIGN=MIDDLE  ALT=\"ln%28P%2F14.7%29=%28-0.21a%29%281%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ln%28P%2F14.7%29%2F-0.21=a ALIGN=MIDDLE  ALT=\"ln%28P%2F14.7%29%2F-0.21=a\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Substitute for P<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ln%2813.25%2F14.7%29%2F-0.21=a ALIGN=MIDDLE  ALT=\"ln%2813.25%2F14.7%29%2F-0.21=a\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ln%280.9014%29%2F-0.21=a ALIGN=MIDDLE  ALT=\"ln%280.9014%29%2F-0.21=a\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28-0.1038%2F-0.21%29=a ALIGN=MIDDLE  ALT=\"%28-0.1038%2F-0.21%29=a\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.4943mi=a ALIGN=MIDDLE  ALT=\"0.4943mi=a\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Convert to feet<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a=0.4943mi%285280ft%2F1mi%29=2610feet ALIGN=MIDDLE  ALT=\"a=0.4943mi%285280ft%2F1mi%29=2610feet\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );