Required

Each of the following independent events requires a year-end adjusting entry. Show how each event and its related adjusting entry affect the accounting equation. Assume a December 31 closing date. The first event is recorded as an example. (Do not round intermediate calculations. Enter any decreases to account balances with a minus sign.)

a.	Paid $6,800 cash in advance on April 1 for a one-year insurance policy.
b.	Purchased $2,000 of supplies on account. At years end, $180 of supplies remained on hand.
c.	Paid $5,400 cash in advance on March 1 for a one-year lease on office space.
d.	Received an $14,220 cash advance for a contract to provide services in the future. The contract required a one-year commitment starting September 1.