A certain restaurant operates 7 days a week. Waitresses are hired to work 6 effective hours per day. The union contract specifies that each waitress must work 5 consecutive days and then have 2 consecutive days off. Each waitress receives the same weekly salary. The restaurant requires at a minimum the following number of waitress hours: Monday, 150; Tuesday, 200; Wednesday, 400; Thursday, 300; Friday, 700; Saturday, 800; and Sunday, 300. 

Assume that this cycle of requirements repeats forever and ignore the fact that the number of waitresses hired must be an integer. 

The manager wishes to find an employment schedule that satisfies the following requirement at a minimum cost. 

Formulate this problem as a linear program.