document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=672922>Question 672922</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An airplane 30,000 feet above the ground begins descending at the rate of 2000 feet per minute. Assume the plane continues at the same rate of descent. <BR>\n" );
document.write( " A)Write an equation to represent the height of an airplane (H) as it descends for (m) minutes. <BR>\n" );
document.write( " B) Graph the situation. <BR>\n" );
document.write( " C) What does the slope represent?<BR>\n" );
document.write( " D) What does the y-intercept represent?<BR>\n" );
document.write( " E) How long will it take for the airplane to reach 13,000 feet?<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 #418421 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=418421\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  An airplane 30,000 feet above the ground begins descending at the rate of 2000 feet per minute.<BR>\n" );
document.write( " Assume the plane continues at the same rate of descent.<BR>\n" );
document.write( ":<BR>\n" );
document.write( "A)Write an equation to represent the height of an airplane (H) as it descends for (m) minutes.<BR>\n" );
document.write( "H = 30000 - 2000m<BR>\n" );
document.write( ":<BR>\n" );
document.write( "B) Graph the situation.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+graph%28+300%2C+200%2C+-6%2C+20%2C+-10000%2C+40000%2C+30000-2000x%29+ ALIGN=MIDDLE  ALT=\"+graph%28+300%2C+200%2C+-6%2C+20%2C+-10000%2C+40000%2C+30000-2000x%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ":<BR>\n" );
document.write( "C) What does the slope represent? <BR>\n" );
document.write( "Slope can be defined as rise/run, this is a negative rise, -2000/1<BR>\n" );
document.write( ":<BR>\n" );
document.write( "D) What does the y-intercept represent?<BR>\n" );
document.write( "30000 ft when the plane starts to descend, m=0<BR>\n" );
document.write( ":<BR>\n" );
document.write( "E) How long will it take for the airplane to reach 13,000 feet?<BR>\n" );
document.write( "30000-2000m = 13000<BR>\n" );
document.write( "-2000m = 13000 - 30000<BR>\n" );
document.write( "-2000m = -17000<BR>\n" );
document.write( "m = -17000/-2000<BR>\n" );
document.write( "m = +8.5 min<BR>\n" );
document.write( ":<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+graph%28+300%2C+200%2C+-6%2C+20%2C+-10000%2C+40000%2C+30000-2000x%2C+13000%29+ ALIGN=MIDDLE  ALT=\"+graph%28+300%2C+200%2C+-6%2C+20%2C+-10000%2C+40000%2C+30000-2000x%2C+13000%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "green line represents 13000 ft<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );