Jules and Vincent are eating Slim's burgers, Jules ordered 2 burgers and 1 order of fries, and Vincent ordered 1 burger, 1 order of fries, and a $5 shake. If Jule's bill was $14 and Vincent's bill was $13, What's the difference between the price of the burger, b, and fries, f?

Maryann’s friends loved her bulletin board, and 4 of them asked her to make one for their homes. she offered to make each of her friends a replica of her bulletin board that measures 2 meters by 3 meters. how many kilograms of burlap should maryann collect to complete the bulletin boards for her friends? maryann should collect kg of burlap.