Answer:
 Capital $ 18,000 
 Retained Earnings $ 1,850 
 TOTAL EQUITY $ 19,850 
First we need to work on the balance sheets, separating each part of it with the correspondent balance. 
As you can see, to equilibrate the accounting equation Assets= Equity + Liabilities it's necessary to elaborate the income statement to complete the Retained Earnings of the month.
As you have the Income statement of the Month then the total amount that S. Jones take from the company must be deducted so we have the retained earnings that meets with the accounting equation. 
Step-by-step explanation:
BALANCE SHEETS May
 Cash $ 12,000 
 Accounts Receivable $ 16,000 
 Office Supplies $ 0,350 
 TOTAL CURRENT ASSETS $ 28,350 
 Equipment $ 16,500 
 TOTAL NONCURRENT ASSETS $ 16,500 
 TOTAL ASSETS $ 44,850 
 Accounts Payable $ 12,000 
 Notes Payable $ 13,000 
 TOTAL CURRENT LIABILITIES $ 25,000 
 TOTAL NONCURRENT LIABILITIES $ 0,000 
 TOTAL LIABILITIES $ 25,000 
 Capital $ 18,000 
 Retained Earnings $ 1,850 
 TOTAL EQUITY $ 19,850 
Income Statement May 
Service Revenue $ 6,000 
Telephone Expense -$ 0,350 
Rent Expense -$ 1,100 
Advertising Expense -$ 2,150 
Income $ 2,400 
S. Jones, Drawing -$ 0,550 
Retained Earnings $ 1,850