- The owner of a small restaurant that sells burgers pays each month $1,000 in rent, $300 in utilities, $200 interest on his loan, and $500 on advertising on local buses. A burger sandwich is priced at $4.00. Unit variable costs for the burger sandwich is $2.00. a. Calculate unit margin and monthly fixed cost. (unit margin

Which of the following statements about revision is most accurate? (a) you must compose first drafts quickly (sprint writing) and return later for editing. (b) careful writers always revise as they write. (c) revision is required for only long and complex business documents. (d) some business writers prefer to compose first drafts quickly and revise later; others prefer to revise as they go.