document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=896244>Question 896244</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The carnival charges $7 for admission and $2 for every book of ride tickets.  Write the equation that would describe how many books of tickets you can buy for $25.  Use \"b\" for the number of books and DO NOT use spaces. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #543356 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=543356\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The $7 is the fixed cost. It does not change based on how many tickets you buy. \r<BR>\n" );
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document.write( "The $2 is known as the variable cost. It changes based on how many ticket books you buy.\r<BR>\n" );
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document.write( "Let b = number of ticket books bought\r<BR>\n" );
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document.write( "If it costs $7 to get in the door, and $2 per book, then it costs 7 + 2b or 2b + 7 dollars total. This is the sum of the fixed cost and variable cost.\r<BR>\n" );
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document.write( "This total cost is equal to $25 because this is how much you have in your pocket.\r<BR>\n" );
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document.write( "So the equation is <font size=4 color=\"red\">2b + 7 = 25</font>\r<BR>\n" );
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document.write( "If you want to solve for b, then...\r<BR>\n" );
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document.write( "2b + 7 = 25\r<BR>\n" );
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document.write( "2b + 7-7 = 25-7\r<BR>\n" );
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document.write( "2b + 0 = 18\r<BR>\n" );
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document.write( "2b = 18\r<BR>\n" );
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document.write( "2b/2 = 18/2\r<BR>\n" );
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document.write( "b = 9\r<BR>\n" );
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document.write( "Therefore, you can buy 9 books with $25. If you only want the equation, then ignore this portion. However, it is useful to know how solve equations. </SPAN>\n" );
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