document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1019794>Question 1019794</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Rap/hip-hop music accounted for 10.7% of the total sales of recorded music in 1997, and 14.9% of the total sales of recorded music in 2007. Find the average rate of change of the percentage of sales of rap/hip-hop music from 1997 to 2007. <BR>\n" );
document.write( "Round to the nearest hundredth of a percent. Note that the percentage sign is already given in the answer, so you do not need to enter it.\r<BR>\n" );
document.write( "\n" );
document.write( "The average rate of change is ????% per year. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #635933 by </B><A HREF=/tutors/aboutme.mpl?userid=KMST><B>KMST(5328)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=KMST><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=KMST><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=635933\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> we are talking about a period of <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=10 ALIGN=MIDDLE  ALT=\"10\"   DISABLED_style= \"max-width:90%; height:auto;\" > years: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2007-1997=10 ALIGN=MIDDLE  ALT=\"2007-1997=10\"   DISABLED_style= \"max-width:90%; height:auto;\" > .<BR>\n" );
document.write( "Over that time, the percentage change was<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=14.9-10.7=4.2 ALIGN=MIDDLE  ALT=\"14.9-10.7=4.2\"   DISABLED_style= \"max-width:90%; height:auto;\" > (an increase of 4.2%).<BR>\n" );
document.write( "The yearly average rate of change of the percentage of sales of rap/hip-hop music was<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4.2%2F10=highlight%280.42%29 ALIGN=MIDDLE  ALT=\"4.2%2F10=highlight%280.42%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > .<BR>\n" );
document.write( "That <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%280.42%29 ALIGN=MIDDLE  ALT=\"highlight%280.42%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > is the answer to be entered.<BR>\n" );
document.write( " <BR>\n" );
document.write( "NOTE:<BR>\n" );
document.write( "That cannot calculate the percent change in sales of rap/hip-hop music,<BR>\n" );
document.write( "because we do not know absolute numbers of units sold. We only know how much rap/hip-hop music was sold as a percentage of total music sold.<BR>\n" );
document.write( "It is possible that sales of rap/hip-hop music (and sales of music in general) decreased from 1997 to 2007. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );