Help need step by step explanation

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 chord ab is congruent to chord cd, then what must be true about ef and eg?

George writes the mixed number as sum and uses the distributive property 1/2.-2/5=1/2-2+2/5=1/2