Please be advised that. You must fill out an Answer, serve the plaintiff, and file your Answer form with the court.Generally, this is due within 30 days after you were served. How to correctly format a business letter. Includes detailed instructions and example on how to write a business letter for any situation. This article and video will show Notaries to fill out each part of a notarial certificate, and common mistakes to avoid. In this article, we discuss how to write a letter with two signatures and provide an example letter for you to use as a reference. A formal letter follows a specific format and uses formal English language. Keep reading to find out how to write formal letters. In this article, we discuss how to write a letter with two signatures and provide an example letter for you to use as a reference.