Is 2 bigger than 2.1 or 2.2?

What is the sum of these mixed numbers 2 1/8 + 4 3/8

Which of the following expressions is equal to 2x^2+8

Acompany manufactures three types of cabinets. it makes 110 cabinets each week. in the first week, the sum of the number of type-1 cabinets and twice the number of type-2 cabinets produced was 10 more than the number of type-3 cabinets produced. the next week, the number of type-1 cabinets produced was three times more than in the first week, no type-2 cabinets were produced, and the number of type-3 cabinets produced was the same as in the previous week.