Answer:
Step-by-step explanation:
The journal entries are shown below:
 On February 9:
Inventory A/c Dr $52,000
 To Accounts payable/ sundry creditors A/c Dr $52,000
(Being purchase of inventory is recorded) 
On March 7:
Accounts receivable A/c Dr $73,000
 To Inventory A/c $73,000
(Being inventory is sold on credit)