document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=211383>Question 211383</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A 10-ounce soft drink sells for 50 cents, and a 16-ounce<BR>\n" );
document.write( "soft drink sells for 68 cents. The price P is determined<BR>\n" );
document.write( "from the volume v of the cup by a linear equation.<BR>\n" );
document.write( "a) Find the equation.<BR>\n" );
document.write( "b) Find the price of a 20-ounce soft drink. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #160061 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=160061\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A 10-ounce soft drink sells for 50 cents, and a 16-ounce<BR>\n" );
document.write( "soft drink sells for 68 cents. The price P is determined<BR>\n" );
document.write( "from the volume v of the cup by a linear equation.<BR>\n" );
document.write( ":<BR>\n" );
document.write( "a) Find the equation.<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Find the slope using the point/slope formula: y-y1 = m(x - x1)<BR>\n" );
document.write( "Assign the given values as follows<BR>\n" );
document.write( "y = 68; x =16<BR>\n" );
document.write( "y1= 50; x1=10<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Use these values in the point/slope formula<BR>\n" );
document.write( "68 - 50 = m(16 - 10)<BR>\n" );
document.write( "18 = 6m<BR>\n" );
document.write( "m = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=18%2F3 ALIGN=MIDDLE  ALT=\"18%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "m = 3 is the slope<BR>\n" );
document.write( "the equation<BR>\n" );
document.write( "y - 50 = 3(x - 10)<BR>\n" );
document.write( "y - 50 = 3x - 30<BR>\n" );
document.write( "y = 3x - 30 + 50<BR>\n" );
document.write( "y = 3x + 20<BR>\n" );
document.write( "which is<BR>\n" );
document.write( "P = 3v + 20<BR>\n" );
document.write( ":<BR>\n" );
document.write( ":<BR>\n" );
document.write( "b) Find the price of a 20-ounce soft drink.<BR>\n" );
document.write( ":<BR>\n" );
document.write( "P = 3(20) + 20<BR>\n" );
document.write( "P = 60 + 20<BR>\n" );
document.write( "P = 80 cent for 20 oz  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );