Can someone please help me with my math corrections?​​

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.)

If sr is 4.5cm and tr is 3cm, what is the measure in degrees of angle s?

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2