Grady received $8,720 of Social Security benets this year. Grady also reported salary and interest income this year. What amount of the benets must Grady include in his gross income under the following ve independent situations? (Leave no answer blank. Enter zero if applicable.)

1. Grady files Single and reports salary of $13,400 and interest income of $380

2. Grady files Single and reports salary of $23,430 and interest income of $730

3. Grady files married joint and reports salary of $77,600 and interest income of $630

4. Grady files married joint and reports salary of $44,000 and interest income of $830

5. Grady files married separate and reports salary of $23,430 and interest income of $730.