Sure! Here are the rewritten sentences using inversion of conditionals:

2. **Would you visit me if I were sent to prison?**
=> **Were I to be sent to prison, would you visit me?**

3. **I didn’t see the signal, so I didn’t stop.**
=> **Had I seen the signal, I would have stopped.**

4. **If I were rich, I could afford to buy an expensive car.**
=> **Were I rich, I could afford to buy an expensive car.**

5. **If I were you, I would tell him the truth.**
=> **Were I you, I would tell him the truth.**

6. **If he weren’t busy right now, he could help them.**
=> **Were he not busy right now, he could help them.**

7. **If she had said sorry, he wouldn’t have been angry.**
=> **Had she said sorry, he wouldn’t have been angry.**

8. **If the computer hadn’t broken down, I wouldn’t have had to stop my work.**
=> **Had the computer not broken down, I wouldn’t have had to stop my work.**

9. **If he hadn’t been angry, I would have said something.**
=> **Had he not been angry, I would have said something.**