Answer:
First you have to recognize which are the balances that affects the income statement which will be revenues (R) and expenses(E).
Common Stock (O), Cash (A), Accounts Receivable (A), Consulting Revenue (R), Office supplies (A), Rent Expense (E), Land (A), Salaries expense (E), Office equipment (A), Telephone expense (E), Accounts Payable (L), Miscellaneous expense (E) and Common Stock (O).
After recognizing the revenues and expenses we can prepare the income statement.
Sales
Consulting Revenue US$ 18,000
Costs
Salaries expense US$ (8,220)
Gross Margin US$ 9,780
Operating expenses
Rent Expense US$ (4,720)
Telephone Expense US$ (900)
Other expenses
Miscelanous Expense US$ (710)
Income before tax US$ 3,450
Income Tax (35%) US$ (1,207.50)
Net Income US$ 2,242.50
(*) Assume that there´s no depreciation.