Can someone 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 inequality is equivalent to -3x < -12? x < 4 , x < -4 , x > 4, x > -4

What is the value of m in the equation 1/2 m - 3/4n=16 when n=8