Requireda. The carrying amount of cash and cash equivalents trade receivables an

Requireda. The carrying amount of cash and cash equivalents trade receivables and accounts payable approximates fair value. Why?b. December 31 20071. Why are investments in marketable equity securities of GSSL classified as fair value measurements under Level 1?c. December 31 2007 and December 31 2008i. Why are marketable equity securities held in supplemental retirement plans partially classified under Level 1 and partially under Level 3?ii. Why are marketable equity securities held in life insurance contracts classified under Level 1?d. During 2008 an impairment charge of $253000 was made related to developed technologies. Why?