I need help with this I have no clue what to do so please help me.

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.)

Which of the following is the shape of a cross section of the figure shown below

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83