12 is 24% of what number

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.

Which of the following represents the range of the graph of f(x) below

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 !