document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=8007>Question 8007</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Directions:  Define the variables and write an equation to model the relationship in each table.\r<BR>\n" );
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document.write( "(This is one table with 2 coulumns)<BR>\n" );
document.write( "Number of sales           Total earnings<BR>\n" );
document.write( "5                             $2.00 <BR>\n" );
document.write( "10                            $4.00<BR>\n" );
document.write( "15                            $6.00<BR>\n" );
document.write( "20                            $8.00      \r<BR>\n" );
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document.write( "Can you help me with this?   </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #4385 by </B><A HREF=/tutors/aboutme.mpl?userid=Earlsdon><B>Earlsdon(6294)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Earlsdon><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=4385\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> First, define the variables: \r<BR>\n" );
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document.write( "Let E be total earnings and S be number of sales. Since the total earnings(E)  depends on the number of sales (S) then (E) will be the \"dependent variable\" and (S) will be the \"independent variable\"\r<BR>\n" );
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document.write( "Now find the relationship between the sales figure (S) and the total earnings (E).\r<BR>\n" );
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document.write( "One way to do this is the divide the total earnings figure by the corresponding number of sales figure and see if there is a constant quotient.\r<BR>\n" );
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document.write( "$2.00/ 5 = $0.40<BR>\n" );
document.write( "$4.00/10 = $0.40<BR>\n" );
document.write( "$6.00/15 = $0.40<BR>\n" );
document.write( "$8.00/20 = $0.40\r<BR>\n" );
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document.write( "So you can see from this that if you multiply the number of sales (S) by $0.40 you will get the total earnings figure (E).\r<BR>\n" );
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document.write( "Now you can write the equation that relates these two quantities:\r<BR>\n" );
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document.write( "E = ($0.40)S Or, in words, Total earnings equals the number of sales  times $0.40 <BR>\n" );
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