The following are transactions for the Sky Blue Corporation: a. Collected $3,600 rent for the period October 1 to December 31, which was credited to Deferred Revenue on October 1.
b. Paid $2,160 for a two-year insurance premium on October 1 and debited Prepaid Insurance for that amount.
c. Used a machine purchased on October 1 for $52,800. The company estimates annual depreciation of $5,280.

Required:
For each of the above transactions for the Sky Blue Corporation, give the accounting equation effects of the adjustments required at the end of the month on October 31.