Heba ate 1/12 of the box of cereal, Now the box is 3/4 full. what fraction did she eat?

One expression below in undefined, and the other expression has a well defined value. which expression is undefined and explain why it has no value. which expression is defined? what is the value of that expression and how do you know? what is a different expression using a trig inverse function that is also undefined?

What are the coordinates of the midpoint of ab? ,1/2) /2,-1) ,-3/2) /2,-2)

Which number line represents the solution set for the inequality -1/2x> 24?