11 A farmer has 40 feet of fencing and wants to create a rectangular chicken grazing area up against his barn. He only needs to fence in 3 sides as shown in the diagram. What is the largest possible area that can enclosed within the fence? Fenced in Region to deng air ta troutups sits onit 12 A hotdog vendor works on a busy street and notices some trends when she changes the pricing. If she charges $2.50 per hotdog she consistently sells 130 in a day. However, when she lowers the price by 25 cents she sells 150. The more she lowers the price, the more she sells proportionally, even if it is only by a few cents. What would be the best selling price, rounded to the nearest five-cent increment? (Remember, pennies are no longer a thing...)