What are some good workouts and foods i can eat to help loose weight?

I wanna loose weight before i go to college.. not much just a bit. i wanna loose 5 pounds and i need to do it in about 3 weeks. Any ideas for good workouts and healthy foods and portions of foods that i can eat that will help me loose those 5 pounds? Meal suggestions would be nice (I'm a vegetarian) and how many calories i should eat a day. thanks for all your help:)