When considering the cost of roofing materials, many people take into account just the shingle prices. This is incorrect, as a roof made just of roofing shingles will not work. You also need to consider all the accessories that are included in a complete roof system.
Business letters tend to have both the sender and receiver's address and the date at the top of the page and they begin with a polite salutation, such as dear Mr. and Mrs, followed by a blank line before the body or the content of the letter.
The Postal Service offers a service called Business Reply Mail (BRM). By opening an account with the local Post Office, a business may supply their customers with return envelopes or labels. This allows customers to send a reply via First-Class Mail or Priority Mail. The business pays the postage and a per piece fee only for the pieces returned.