document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=278885>Question 278885</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A carpet cleaning service charges $90 for a five-hr job and $126 for an eight-hr job. What would they charge for a 10-hr job? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #202911 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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=202911\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 90/5=18 dollars per hour.<BR>\n" );
document.write( "126/8=15.75 dollars per hour.<BR>\n" );
document.write( "(5,18) & (8,15.75) are 2 points on the line projection.<BR>\n" );
document.write( "Slope=(15.75-18)/(8-5)<BR>\n" );
document.write( "Slope=-2.25/3=-.75<BR>\n" );
document.write( "18=5*-.75+b<BR>\n" );
document.write( "18=-3.75+b<BR>\n" );
document.write( "b=18+3.75<BR>\n" );
document.write( "b=21.75<BR>\n" );
document.write( "y=-.75x+21.75<BR>\n" );
document.write( "y=-.75*10+21.75<BR>\n" );
document.write( "y=-7.5+21.75<BR>\n" );
document.write( "y=14.25 dollars per hour for a 10 hour job.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );