The following table shows information about yearly lows, highs, and percentage changes for the years 2000 to 2012. Let L be the set of years where the low was greater than 8000. Let H be the set of years where the high was greater than 11,000. Let C be the years when the percentage change (from low to high) exceeded 35%.
(a) List the elements of L, H, and C.
(b) Is any of L, H, or C a subset of one of the others (besides itself)?
(c) Write a verbal description of C'.
(d) Find H' ( C' and describe it in words.
(e) Find L' ( C and describe it in words?

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Dow Jones Industrial Average Low % Change Year High 13,610.15 12,810.54 2012 12,101.46 10,655.30 12.5 2011 20.2 19.6 2010 9686.48 11,585.33 10,092.19 54.1 2009 6547.05 2008 7552.29 13,056.72 14,164.53 72.9 2007 12,050.41 17.5 2006 10,667.39 10,012.36 12,510.57 10,940.50 17.3 2005 9.3 2004 9749.99 10,854.54 10,453.92 11.3 2003 7524.06 38.9 2002 7286.27 10,635.65 11,332.92 46.0 2001 37.6 8235.94 2000 9796.03 11,722.98 19.7