Fillable form with long answers

Looking to purchase if I can import my forms made in powerpoint to Jotform and turn into fillable pdf with the possibility of a paragraph for an answer. Then have the ability to edit their answers and return for them to edit.

Firstly, unfortunately, you can't directly import powerpoint presentations into JotForm. You must create new forms in JotForm.
You can use "Long Text Entry" field for long answers.If the users will change their answers, you can send to the users "Edit Submission" link via autoresponder email. Then they will be able to update their submissions with this link.
How to Let Users Update Their Form Submissions at a Later Date
If you want to update submissions, you can do it in your submissions page. 
How to Edit Submissions Made on Your Forms

You can convert online forms to fillable PDF forms. Also, you can create a new one too. Please refer to this article.
Create Fillable PDF Forms with PDF Editor

Let's create your first fillable PDF form from here.