I need help with my algebra homework

One 8-oz serving each of coffee, energy drink, and soda contains 201 mg of caffeine. One serving of coffee has 2 mg more caffeine than two servings of soda. One serving of energy drink contains 37 mg less caffeine than one serving each of coffee and soda. Find the amount of caffeine in one serving of each beverage.The total number of restaurant-purchased meals that the average person will eat in a restaurant, in a car, or at home in a year is 148. The total number of these meals eaten in a car or at home exceeds the number eaten in a restaurant by 10. Ten more restaurant-purchased meals will be eaten in a restaurant than at home. Find the number of restaurant-purchased meals eaten in a restaurant, the number eaten in a car, and the number eaten at home.In a recent international sport competition, the top three countries- Country A, Country B, and Country C-won a total of 123 medals. Country B won 8 more medals than Country C. Country A won 31 more medals than the total amount won by the other two. How many medals did each of the top three countries win?\f\f\f