document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=706421>Question 706421</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Virginia's parents gave her money to put in her cafeteria account at the beginning of the school year. The function f (s) = 60 – 2.5s describes the amount remaining in her account after she had purchased lunch for s school days. How many days had she eaten in the lunchroom when her account balance was $27.50?\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 #435162 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=435162\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Virginia's parents gave her money to put in her cafeteria account at the beginning of the school year. The function f (s) = 60 – 2.5s describes the amount remaining in her account after she had purchased lunch for s school days. How many days had she eaten in the lunchroom when her account balance was $27.50? <BR>\n" );
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document.write( "Given:<BR>\n" );
document.write( "f(s) = 60 – 2.5s<BR>\n" );
document.write( "set f(s) to 27.50 and solve for s:<BR>\n" );
document.write( "27.50 = 60 – 2.5s<BR>\n" );
document.write( "-32.5 = –2.5s<BR>\n" );
document.write( "32.5 = 2.5s<BR>\n" );
document.write( "32.5/2.5 = s<BR>\n" );
document.write( "13 days = s </SPAN>\n" );
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