document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=936794>Question 936794</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I feel like a dumb parent as I cant help my child with this. please help.\r<BR>\n" );
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document.write( "Cell Company offers a single line plan for $50. they wan to offer a family plan for 2 lines or more under the same plan. doing so you will decrease the charges per line by $5 each, (the costs per line would decrease for all lines, not just for the lines beyond the first 2.\r<BR>\n" );
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document.write( "1. What is the costs per line?\r<BR>\n" );
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document.write( "2. If you have five lines under the same family plan what will the total costs be.\r<BR>\n" );
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document.write( "3. if you have 8 lines under the same family plan what will be the total costs.\r<BR>\n" );
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document.write( "4. what would be the factored from and the general form for the total costs of the family plan as a function of the number of lines beyond 2 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #570293 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=570293\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Cell Company offers a single line plan for $50.<BR>\n" );
document.write( " they want to offer a family plan for 2 lines or more under the same plan. doing so you will decrease the charges per line by $5 each, (the costs per line would decrease for all lines, not just for the lines beyond the first 2.<BR>\n" );
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document.write( "I am assuming that each line is $5 less than the previous line<BR>\n" );
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document.write( "Let x = no. of lines<BR>\n" );
document.write( "1. What is the costs per line?<BR>\n" );
document.write( "50 - 5(x-1)<BR>\n" );
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document.write( "2. If you have five lines under the same family plan what will the total costs be.<BR>\n" );
document.write( "x(50 - 5(x-1))<BR>\n" );
document.write( "x=5<BR>\n" );
document.write( "5(50 - 5(5-1)) = 5(50-5(4)) = 5(50-20) = 5(30) = $150 for five lines<BR>\n" );
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document.write( "3. if you have 8 lines under the same family plan what will be the total costs.<BR>\n" );
document.write( "x=8<BR>\n" );
document.write( "8(50 - 5(8-1)) = 8(50 - 35) = 8(15) = $120 for eight lines<BR>\n" );
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document.write( "4. what would be the factored form and the general form for the total costs of the family plan as a function of the number of lines beyond 2<BR>\n" );
document.write( "f(x) = x(50 - 5(x-1))<BR>\n" );
document.write( "f(x) = x(50 - 5x + 5)<BR>\n" );
document.write( "f(x = 50x - 5x^2 + 5x<BR>\n" );
document.write( "f(x) = -5x^2 + 55x<BR>\n" );
document.write( "can be factored to<BR>\n" );
document.write( "f(x) = -5x(x - 11)<BR>\n" );
document.write( "This is interesting in that if you get 11 lines, you pay 0!<BR>\n" );
document.write( "If you get 12 lines they pay you $60!<BR>\n" );
document.write( "Maybe I missed something here<BR>\n" );
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document.write( "You are not a dumb parent, you are a smart parent, the dumb parent does not try to personally help his child. CK <BR>\n" );
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