Classify the following items as either a capital expenditure or a revenue expenditure (an expense):

1. Changed oil in the delivery truck

2. Replaced the engine in the delivery truck

3. Paid sales tax on the new delivery truck

4. Installed a new, similar roof on the office building

5. Paid freight and installation charges for a new computer system

6. Repainted the administrative offices

7. Purchased and installed a new toner cartridge in the laser printer

8. Replaced several missing shingles on the roof

9. Trained an employee prior to using the new comp