Answer:
S/n General Journal Debit Credit
1. Insurance Expense $5,750
 {(23,000/12) * 3}
 Prepaid Insurance $5,750
2. Interest Receivable $735 
 (21,000 * 7% * 6/12)
 Interest Revenue $735 
3. Depreciation Expense $14,200
 Accumulated Dep. $14,200
Effect on Net Income
Net Income would be lower by: 
==> ($5,750 - $735 + $14,200)
==> $19,215