Find the value of x. pls

The sales totals at macy's food store have increased exponentially over the months. which of these best shows the sales in the first three months?

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

(c) the diagram shows the first three shapes of a matchsticks arrangement.first shape = 3second shape = 5third shape = 7given m represents the number of matchstick used to arrange the n'th shape.(i) write a formula to represent the relation between m and n. express m as the subjectof the formula.(ii) 19 matchsticks are used to make the p'th shape. find the value of p.