Which graph represents the function f(x) = |x|?

In a graph with several intervals o data how does a constant interval appear? what type of scenario produces a constant interval?

What is the solution set of the quadratic inequality x^2-5< or equal to 0

Seymour is twice as old as cassandra. if 16 is added to cassandra’s age and 16 is subtracted from seymour’s age, their ages become equal. what are their present ages? show !