document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=187327>Question 187327</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I have a math project for school and it involves finding the equations of the following companies' data. I know how to graph these and the equations for each part of each graph; however, I don't know how to find an equation that will take into account the change in cost per minute.  Thanks for any help!\r<BR>\n" );
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document.write( "Here is the data:\r<BR>\n" );
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document.write( "Company A: $30 fee, 10 cents a minute for the first 300 minutes, then 8 cents a minute after that.\r<BR>\n" );
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document.write( "Company B: No fee, 25 cents a minute for 200 minutes, 10 cents a minute for the next 500 minutes then 5 cents a minute.\r<BR>\n" );
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document.write( "Company C: $50 flat fee for the first 500 minutes, then 10 cents per minute. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #140422 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=140422\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> find an equation that will take into account the change in cost per minute. Thanks for any help! <BR>\n" );
document.write( "Here is the data: <BR>\n" );
document.write( "Company A: $30 fee, 10 cents a minute for the first 300 minutes, then 8 cents a minute after that. <BR>\n" );
document.write( "Cost = 3000 + 10x for 0<x<=300 or cost = 8x for x>300<BR>\n" );
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document.write( "Company B: No fee, 25 cents a minute for 200 minutes, 10 cents a minute for the next 500 minutes then 5 cents a minute.<BR>\n" );
document.write( "Cost = 25x for 0 < x <=200 or 10x for 200< x <=500 or 5x for x > 500<BR>\n" );
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document.write( "Company C: $50 flat fee for the first 500 minutes, then 10 cents per minute.<BR>\n" );
document.write( "Cost 50 for 0 < x <= 500 or 10x for x> 500<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
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