document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=426941>Question 426941</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Minimizing cost. A company uses the formula C(x) = 0.02x² - 3.4x + 150 to model the unit cost in dollars for producing x stabilizer bars. For what number of bars is the unit cost at its minimum? What is the unit cost at that level of production?\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #296924 by </B><A HREF=/tutors/aboutme.mpl?userid=edjones><B>edjones(8007)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=edjones><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=edjones><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=296924\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> C(x) = 0.02x² - 3.4x + 150 <BR>\n" );
document.write( "-b/2a is the minimum<BR>\n" );
document.write( "-(-3.4)/2(.02)<BR>\n" );
document.write( "=3.4/.04<BR>\n" );
document.write( "=85 bars<BR>\n" );
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document.write( ".02*85^2-3.4*84+150<BR>\n" );
document.write( "=144.5-289+150<BR>\n" );
document.write( "=$5.50 unit cost<BR>\n" );
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document.write( "Ed<BR>\n" );
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