Accounting help please. Preparing adjusting entries? prepare adjusting journal entries for the year ended December 31,2009, for each of these separate situations. Assume that prepaid expenses are initially recorded in asset accounts, and that fees collected in advance of work are initially recorded as liabilities.

a) Depreciation on the company's equipment for 2009 is computed to be $16,000.
b) The Prepaid Insurance account had a $6000 debit balance at December 31, 2009, before adjusting for the costs of any expired coverage. An analysis of the company's insurance policies showed that $640 of unexpired insurance coverage remains.
c) The Supplies account had a $325 debit balance on December 31, 2008; and $3,480 of supplies was purchased during 2009. The December 31, 2009, physical count showed $383 of supplies available.
d) One-fifth of the work related to $15,000 of cash received in advance this advance this period was performed.
e) The Prepaid Insurance account had a $6,800 debit balance at December 31, 2009, before adjusting for the costs of any expired coverage. An analysis of insurance policies showed that $6,160 of coverage had expired.
f) Wage expenses of $2,700 have been incurred but are not paid as of December 31, 2009.