R is positive can someone simplify it ik it may actually be simple lol

Look at this expression. a3b3c a-3b-3c-1 which of the following is the simplest form of the expression above?

What are the vertical asymptotes of the function f(x) =5x+5/x2 + x-2

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.)