Functional template is used when the applicant has considerable gaps in his work history. These gaps make a bad impression on employer and hence should be hidden. This format is more focused on the skills rather than the experiences of the applicant.
How can you expect your customers to take your business seriously if your invoices do not appear professional? An invoice is the last impression you give to your customer. Why not close the deal with an invoice template that is professional, free, and easy to use? A professional invoice is critical to your companys credibility, not only so your customers pay you promptly, but also so they call you again for future business.