We aren't going to post answers to problems on the website, regardless of whether this is 'your' homework or not (because it will be someone's eventually, and we don't want them finding answers here).
If you have a specific question, you can ask that.
But also, as I said, you would need to tell us what the actual problem is asking, and in general we could discuss ideas about phonology with you, but we may not be able to reply with the exact approach used in a particular book.
