Hi

What would be the accounting transactions for the following:

1/ Store supplies on hand
2/ Interest accrued on notes payable
3/ Salaries accrued but not paid
4/ Merchandise Inventory

I would sincerely appreciate your help

It looks like you have adjusting entries where you have to calculate the amount, then do an adjusting entry.

For an example your Supplies account balance is $250 but your actual physical balance is $50 worth of supplies. You have to get your Supplies account balance to $50 because there is $50 worth of supplies onhand, not the $250 your account says there is. So you have to calculate the amount of the adjusting entry by taking $250 account balance minus the $50 actual balance equals $200 adjustment amount. This is the amount used during your accounting period. So your adjusting entry will be:
Debit Supplies Expense for $200
Credit Supplies for $200

Now your Supplies account balance will be $50 which is what your actual balance is.