What does a business proposal look like?

What is the best way to write a business proposal. I'm trying to get people to invest in my restaurant? I have a couple of people inter-rested, but I have to write a proposal. I $100,000 of equipment to put up for collateral. I just need $30,000 to help & push my restaurant. It has 50,60,& 70 memorabilia. It has been put in Texas Highway magazine ones this year.