document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=150331>Question 150331</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Paul's Plumbing charges $35 for any service call plus an additional $40 an hour for labor. A service call from Robert's Rapid Repair Plumbing costs $45 plus and additional $40 and hour for labor. When is the total price for a service the same for both companies? when is it better to use Paul's Plumbing? explain your answer in terms of slopes and y-intercepts. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #110427 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=110427\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Paul's Plumbing charges $35 for any service call plus an additional $40 an hour for labor. A service call from Robert's Rapid Repair Plumbing costs $45 plus and additional $40 and hour for labor. When is the total price for a service the same for both companies? when is it better to use Paul's Plumbing? explain your answer in terms of slopes and y-intercepts.<BR>\n" );
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document.write( "Since they charge the same for labor ($40), Paul's is always $10 cheaper<BR>\n" );
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document.write( "In terms of graphs, they have the same slope (40x) so the lines are parallel and never intersect. the y intercepts will be different, 35 & 45 </SPAN>\n" );
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