Answer:
Explanation:
 The journal entries are shown below:
1. Account receivable A/c Dr $20,000
           To Deferred revenue A/c $20,000
(Being the paint house on account is recorded)       
2. Equipment A/c Dr $21,000
          To Cash A/c $21,000
(Being the equipment is purchased for cash)
3. Supplies A/c Dr $3,500
             To Accounts Payable A/c $3,500
(Being the office supplies are purchased on credit basis) 
4. Salaries expense A/c Dr $4,200
         To Cash A/c $4,200
(Being the employees salaries are paid for cash)
5. Advertising expense A/c Dr $1,000
         To Cash A/c $1,000
(Being the advertising are purchase for cash)
6.  Rent expense A/c $5,400
                 To Cash A/c $5,400
(Being the rent is paid for cash)
7. Cash A/c Dr $15,000
       To Account receivable A/c $15,000
(Being the cash is received)
8. Cash A/c Dr $6,0000
       To Deferred revenue $6,000
(Being the cash is received)