With respect to the current accounting period, show the effect of the following transactions on net profit and cash for the period. 

1. Purchase inventory on cash for $40 000.

2. Recording depreciation of $10 000.

3. Credit sale of a service for $30 000. 

4. Payment of a cash dividend of $8000. 

5. Payment of salary for the current period of $20 000. 

6. Interest payment on a loan of $7000. 

7. Repayment of a loan of $100 000. 

8. Payment of an invoice for advertising of $13 000 that had been recorded as an expense in the previous period.