document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=91099>Question 91099</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Bob owns a watch repair shop. He has found that the cost of operating his shop is given by c(x)=4x^2-304x+71, where x is the number of watches repaired. How many watches must her repair to have the lowest cost?\r<BR>\n" );
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document.write( "Thanks. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #66181 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=66181\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Bob owns a watch repair shop. He has found that the cost of operating his shop is given by c(x)= 4x^2 - 304x + 71, where x is the number of watches repaired. How many watches must he repair to have the lowest cost?<BR>\n" );
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document.write( "find the axis of symmetry, using the formula: x = -b/(2a)<BR>\n" );
document.write( "In the above equation a = 4; b = -304<BR>\n" );
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document.write( "x = -(-304)/(2*4)<BR>\n" );
document.write( "x = +304/8<BR>\n" );
document.write( "x = +38 is the number of watches for lowest cost<BR>\n" );
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