Step-by-step explanation:
1. The adjusting entry is as follows:
Supplies expense A/c Dr $7,000
To Supplies A/c $7,000
(Being supplies account is adjusted)
The supplies expense is computed below:
= Supplies opening balance + purchase of supplies - supplies are still on hand
= $3,500 + $5,000 - $1,500
= $7,000
2. The ending balance in the supplies account is $1,500 only which are still on hand.