How to solve inequaities? whats the answer

Plz determine whether the polynomial is a difference of squares and if it is, factor it. y2 – 196 is a difference of squares: (y + 14)2 is a difference of squares: (y – 14)2 is a difference of squares: (y + 14)(y – 14) is not a difference of squares

Which number line represents the solution set for the inequality - x 24?

If a company produces x units of an item at a cost of $35 apiece the function c=35x is a of the total production costs