document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=903527>Question 903527</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The cost of a classified ad is based on a daily fixed rate plus a flat service fee. One day costs $3.50 and four days costs $8.00.<BR>\n" );
document.write( "Let x=the number of days the ad appears; let y=the cost in dollars.<BR>\n" );
document.write( "The relationship between x and y is a linear function.<BR>\n" );
document.write( "(a)From the information in the problem, make two (x,y) pairs.<BR>\n" );
document.write( "(_,_) and (_,_)<BR>\n" );
document.write( "(b)Using the two pairs from part (a) find the slope of the linear function.<BR>\n" );
document.write( "(c)Now write an equation for the line in point-slope form (there are two correct ways to do this)<BR>\n" );
document.write( "(d) Using the equation: find the cost of a 6-day ad<BR>\n" );
document.write( "(e)Using the equation: how many days could an ad run, for the cost of $18.50? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #548139 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=548139\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> One day costs $3.50 and four days costs $8.00.\r<BR>\n" );
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document.write( "a) (1,3.5)(4,8)<BR>\n" );
document.write( "b)m=4.5/3=1.5<BR>\n" );
document.write( "b=-1*4.5/3*1+1*3.5=2<BR>\n" );
document.write( "c)y= 1.5x+2<BR>\n" );
document.write( "y=11<BR>\n" );
document.write( "d)y= 1.5x+2<BR>\n" );
document.write( "18.50= 1.5x+2<BR>\n" );
document.write( "16.50=1.5x<BR>\n" );
document.write( "x=11 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );