document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1151819>Question 1151819</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A phone company offers two monthly plans. Plan A cost $16 plus an additional $0.16 for each minute of calls. Plan B cost $22 plus an additional $0.14 for each minute of calls. For what amount of calling do the two plans cost the same? What is the cost when the two plans cost the same? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #773682 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><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=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=773682\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> plan A costs $16 plus .16 per minute.<BR>\n" );
document.write( "plan B costs $22 plus an additional .14 per minute.<BR>\n" );
document.write( "let x = the number of minutes.<BR>\n" );
document.write( "let y = total cost.<BR>\n" );
document.write( "formula for plan A is y1 = 16 + .16 * x<BR>\n" );
document.write( "formula for plan B is y2 = 22 + .14 * x\r<BR>\n" );
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document.write( "the total costs are equal when y1 = y2.<BR>\n" );
document.write( "this means that 16 + .16 * x = 22 + .14 * x<BR>\n" );
document.write( "subtract 16 from both sides of this equation to get:<BR>\n" );
document.write( ".16 * x = 6 + .14 * x<BR>\n" );
document.write( "subtract .14 * x from both sides of this equation to get:<BR>\n" );
document.write( ".02 * x = 6<BR>\n" );
document.write( "solve for x to get:<BR>\n" );
document.write( "x = 6 / .02 = 300.\r<BR>\n" );
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document.write( "the plans should be equal at 300 minutes of use.\r<BR>\n" );
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document.write( "plan A would cost 16 + .16 * 300 = 64 dollars.<BR>\n" );
document.write( "plan B would cost 22 + .14 * 300 = 64 dollars.\r<BR>\n" );
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document.write( "your solution is that the cost when the two plans cost the same is equal to 64 dollars.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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