Sociology homework help

The following information was taken from the 2007 financial statements of FedEx Corporation, a major global transportation/delivery company.(in millions)20072006Accounts receivable (gross)$4,078 $3,660 Accounts receivable (net)3,942 3,516 Allowance for doubtful accounts136 144 Sales35,214 32,294 Total current assets6,629 6,464