How is exercise 5 different from exercise 6? explain

When are two distinct non vertical lines parallel

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.)

Answer asap! due in 30 minutes! ! 8th grade math