Please show me how u get the work ty so much

Use set builder notation to represent the following set: { -3, -2, -1, 0}

Arestaurant offers a $12 dinner special that has 5 choices for an appetizer, 12 choices for an entrée, and 4 choices for a dessert. how many different meals are available when you select an appetizer, an entrée, and a dessert? a meal can be chosen in nothing ways. (type a whole number.)

Find the solution of each of the following.