A dog training business began on December $1.$ The following transactions occurred during its first month.

December $1$ Receives $$20,000$ cash as an owner investment.

December $2$ Pays $$6,000$ cash for equipment.

December $3$ Pays $$3,600$ cash $($insurance premium$)$ for a $12-$month insurance policy. Coverage began on December $1.$

December $4$ Pays $$1,000$ cash for December rent expense.

December $7$ Provides all$-$day training services for a large group and immediately collects $$1,100$ cash.

December $8$ Pays $$200$ cash in wages for part$-$time help.

December $9$ Provides training services for $$2,400$ and rents training equipment for $$600.$ The customer is billed

$$3,000$ for these services.

December $19$ Receives $$3,000$ cash from the customer billed on Dec. $9.$

December $20$ Purchases $$2,000$ of supplies on credit from a supplier.

December $23$ Receives $$1,600$ cash in advance of providing a $4-$week training service to a customer.

December $29$ Pays $$1,300$ cash as a partial payment toward the accounts payable of Dec. $20.$

December $30$ Withdrawal of $$500$ cash by the owner for personal use.

Information for month$-$end adjustments follows:

December $31$ One month of the $12-$month, $$3,600$ insurance policy is expired by December $31.$ This leaves $$3,300$ not yet

expired.

December $31$ A physical count of supplies on December $31$ shows that only $$1,200$ of supplies remain of the $$2,000$

supplies purchased.

December $31$ The $$6,000$ of equipment purchased at the beginning of December has a useful life of $5$ years and will be

worth nothing at the end of $5$ years $(60$ months$).$ The business uses straight$-$line depreciation to

allocate the $$6,000$ net cost over $60$ months. On December $31,1$ month of depreciation must be recorded.

December $31$ The business agreed on December $23$ to provide a $4-$week training service to a customer for a fixed fee of

$$1,600$ paid in advance. By December $31,$ the business has provided $1$ of the $4$ weeks of services and

earned one$-$fourth of the fee. No revenue is yet recorded.

December $31$ On December $31,$ wages of $$600$ are owed to a part$-$time employee for work done over the past $3$ weeks.

Those wages are not yet paid or recorded.

December $31$ The business agreed to provide $6$ weeks of training services to a customer for a fee of $$4,200,$ or $$700$

per week. The customer agrees to pay the full $$4,200$ at the end of $6$ weeks when services are complete.

By December $31,2$ weeks of services have been provided, but the business has not yet billed the customer

or recorded the $2$ weeks of services provided.

Prepare the required journal entries, adjusting entries, and closing entries.