How much does advertising on a billboard cost?

I really need this answer by march 17, 2006. Pleaseeee help me. It's for my tech class. we're advertising.

How much does advertising on a billboard cost?
It varies depending on where u want to advertise. If u want to advertise in a popular city, or destination it cost more. But if u want 2 advertise where it's not so popular it's cheaper. I would suggest determining where u want to advertise then getting the contacts number off of the billboards. But generally I would say on average $20 a week.

dentist