![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e036bfbf1e5e5365838494d8118c3685.png\")
6)
\Alex found the average change of his stocks in months are,
\-10.29 in June, -8.16 in July, +34.50 in August, and +3.12 in September.
\Find the average change in his stocks.
\
Option A is correct choice.
\7)
\Find the length of one side of a square floor.
\The area is 320 square feet.
\Standard formula of square floor area is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=98b64dee8ad8c88b027f81b660964591.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=298f1b4f2afb32c790150b25caba1888.png\")
The length of one side of a square floor is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ca31792d658dc0042fa63f89f184194a.png\")