Answer:
The Journal entries are as follows:
(i) On June 30, 2019
Rent expense(8,400 ÷ 7) A/c Dr. $1,200
To prepaid Expense $1,200
(To record the rent expense)
(ii) On June 30, 2019
Supplies expense A/c [$10,250 - $5,960] Dr. $4,290
To supplies $4,290
(To record the supplies expense)
(iii) On June 30, 2019
Depreciation Expense A/c [(72,900 ÷ 9) ÷ 12] Dr. $675
To Accumulated depreciation-Equipment $675
(To record the depreciation expense)