document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1000057>Question 1000057</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 8)	A basic cell phone plan at Verizon Wireless costs $45 a month with an additional $0.10 per text message sent. AT&T charges $30 a month with an additional $0.13 per text message sent. How many text messages would you have to send for the plans to cost the same? If you send an average of 1200 text messages a month, which company would you want to choose as your provider?<BR>\n" );
document.write( "a.	Define your variables <BR>\n" );
document.write( "           (I know that X=# of Verizon texts, Y=# of AT&T texts)<BR>\n" );
document.write( "b.	Write your system of equations (X<=0,Y<=0,?,?)<BR>\n" );
document.write( "c.	Show your work<BR>\n" );
document.write( "d.	Answer the question in a complete sentence. \r<BR>\n" );
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document.write( "I'm not sure how to write out the system of equations? Do I exclude the amount they charge per month? Is it .10x<=1200 and .13y<=1200? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #617718 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=617718\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> \r<BR>\n" );
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document.write( "Number of tests made =x\r<BR>\n" );
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document.write( "Verzon C(x) = 45 + 0.1x => 45+0.1*1200 =165\r<BR>\n" );
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document.write( "AT & T C(y) = 30 + 0.13x=> 30 + 0.13*1200=186\r<BR>\n" );
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document.write( "For 1200 texts C(x) is less than C(y)\r<BR>\n" );
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document.write( "If the costs are to be the same then\r<BR>\n" );
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document.write( "45 + 0.1x =  30 + 0.13x\r<BR>\n" );
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document.write( "15=0.03x\r<BR>\n" );
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document.write( "15/0.03= x\r<BR>\n" );
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document.write( "500=x \r<BR>\n" );
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document.write( "500 texts <BR>\n" );
document.write( " </SPAN>\n" );
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