document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=207641>Question 207641</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0534404693/algebrahomeworkh>Algebra and Trigonometry with Analytic Geometry</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Can you please solve question (b) for me? Here's the problem:\r<BR>\n" );
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document.write( "Below the cloud base, the temperature T (in F) at heigh h (in feet) can be approximated by the equation T=To - (5.5/1000)h, where To is the temperature at ground level. (a) Determine the air temperature at a height of 1 mile if the ground temperature is 70 degrees F. (b) At what altitude is the temperature freezing.  \r<BR>\n" );
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document.write( "I'm not sure what number to plug in for \"T\", but the answer is 6909 feet.  Thank you for any help! :)<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 #157085 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=157085\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Below the cloud base, the temperature T (in F) at height h (in feet) can be <BR>\n" );
document.write( "approximated by the equation T = To - (5.5/1000)h, <BR>\n" );
document.write( "where To is the temperature at ground level.<BR>\n" );
document.write( ":<BR>\n" );
document.write( " (a) Determine the air temperature at a height of 1 mile if the ground temperature is 70 degrees F.<BR>\n" );
document.write( "To = 70<BR>\n" );
document.write( "h = 5280 (1 mile in feet)<BR>\n" );
document.write( "T = 70 - <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%285.5%2F1000%29%2A5280 ALIGN=MIDDLE  ALT=\"%285.5%2F1000%29%2A5280\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "T = 70 - <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%2829040%2F1000%29 ALIGN=MIDDLE  ALT=\"%2829040%2F1000%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "T = 70 - 29.04<BR>\n" );
document.write( "T = 40.96 degrees at 1 mile<BR>\n" );
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document.write( "(b) At what altitude is the temperature freezing.<BR>\n" );
document.write( "Assuming the surface temp is still 70, T = 32<BR>\n" );
document.write( "32 = 70 - <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%285.5%2F1000%29h ALIGN=MIDDLE  ALT=\"%285.5%2F1000%29h\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "32 - 70 = -<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%285.5%2F1000%29h ALIGN=MIDDLE  ALT=\"%285.5%2F1000%29h\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "-38 =  -<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%285.5%2F1000%29h ALIGN=MIDDLE  ALT=\"%285.5%2F1000%29h\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Write it;<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%285.5%2F1000%29h ALIGN=MIDDLE  ALT=\"%285.5%2F1000%29h\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 38<BR>\n" );
document.write( "5.5h = 38 * 1000<BR>\n" );
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document.write( "5.5h = 38000<BR>\n" );
document.write( "h = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=38000%2F5.5 ALIGN=MIDDLE  ALT=\"38000%2F5.5\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "h = 6,909 ft, the temp is freezing, which is what you got, way to go! </SPAN>\n" );
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