A select list of transactions for Texas Delivery Service follows. For each transaction, identify what type of adjusting entry would be needed. Select from the following four types of

adjusting entries: deferred expense, deferred revenue, accrued expense, and accrued revenue.

Apr. $1$: Paid six months of rent, $$6,800.$

Apr. $10$: Received $$1,800$ from customer for six$-$month service contract that began April $1.$

Apr. $15$: Purchased a computer for $$1,500.$

Apr. $18$: Purchased $$600$ of supplies on account.

Apr. $30$: Work performed but not yet billed to customer, $$8,000$

Apr. $30$: Employees earned $$4,000$ in salaries that will be paid May $2.$