PERIOD1SECTION+5-7

 =//MATHCAST// =

media type="custom" key="3728921" = = = = = = =__//HELPFUL LINKS // __= //:http://www.purplemath.com/modules/solvelit2.htm// ** 
 * //:http://www.ies.co.jp/math/java/geo/linfg/linfg.html//
 * //:http://blogs.monashores.net/bettenm/files/2009/02/42.pdf// **
 * //:http://mathcentral.uregina.ca/QQ/database/QQ.09.99/khanboubi1.html// **