Does anyone know the answer?

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 constant of variation for the relation and use it to write an equation for the statement. then solve the equation.

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.