document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=673212>Question 673212</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Suppose the cost to produce 10 units of a product is $20 and the cost to produce 20 units is $70. Find the equation of the line, then find the cost to produce 35 units.               \r<BR>\n" );
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document.write( "I'm using excel and your help is greatly appreciated. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #418518 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=418518\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Suppose the cost to produce 10 units of a product is $20 and the cost to produce 20 units is $70. Find the equation of the line, then find the cost to produce 35 units. <BR>\n" );
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document.write( "You have 2 points:: (10,20) and (20,70)<BR>\n" );
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document.write( "slope = (70-20)/(20-10) = 50/10 = 5<BR>\n" );
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document.write( "Form:: y = mx + b<BR>\n" );
document.write( "Solve for \"b\":<BR>\n" );
document.write( "20 = 5*10 + b <BR>\n" );
document.write( "b = -30<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "y = 5x - 30<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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