For number 14,16,and 18, i don’t understand how to estimate the product

Which graph represents the solution of the inequality?

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 axis of symmerty for x y=x squared -4x-8