What type of product cost (direct labor, direct materials or factory overhead) or not a product cost for the followings:

1. factory depreciation
2. machine operator
3. maintenance supplies
4. president's salary
5. plastic parts
6. assembler's wages
7. salesmen commissions
8. wood
9. factory supervisor's salary

What type of the statement of cash flows (operating activities, financing activities, investing activities or schedule of non cash financing and investing) for the followings:

1. dividends received on investment
2. payment of dividends to stockholders
3. increase in income taxes payable
4. exchange of land for note payable
5. issuance of bond payable
6. increase in accounts receivable
7. loss on sale of equipment
8. decrease in inventory
9. sales of machinery held for use by the company
10. purchase of the stock of another company as investment