document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1200084>Question 1200084</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The phone company Splint has a monthly cellular plan where a customer pays a flat monthly fee and then a certain amount of money per minute used on the phone. If a customer uses 400 minutes, the monthly cost will be $227. If the customer uses 940 minutes, the monthly cost will be $497. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #834102 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39630)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=834102\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> This is how Splint plan works.\r<BR>\n" );
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document.write( "For two points  (time,bill) in variables  (x,y) they are<BR>\n" );
document.write( "(400,227) and (940,497).\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=%28%28497-227%29%2F%28940-400%29%29x%2Bb ALIGN=MIDDLE  ALT=\"y=%28%28497-227%29%2F%28940-400%29%29x%2Bb\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=0.5x%2Bb ALIGN=MIDDLE  ALT=\"y=0.5x%2Bb\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Picking the first point,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b=y-0.5x ALIGN=MIDDLE  ALT=\"b=y-0.5x\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b=227-0.5%2A400 ALIGN=MIDDLE  ALT=\"b=227-0.5%2A400\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b=27 ALIGN=MIDDLE  ALT=\"b=27\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Cost for any month is  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28y=0.5x%2B27%29 ALIGN=MIDDLE  ALT=\"highlight%28y=0.5x%2B27%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >. </SPAN>\n" );
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