Answer:
The amount of Supplies Expense for the accounting​ period is $9,000
Explanation:
The computation of the supplies expense is shown below:
= Beginning balance of office supplies + purchase of office supplies - office supplies on hand
= $6,000 + $5,000 - $2,000
= $9,000
The journal entry is shown below for better understanding:
Supplies Expense A/c Dr $9,000
    To supplies A/c         $9,000
(Being supplies expense is adjusted)