Quick math ? !

|x + 6| > 15

a. -21 < x < 9
b. x < -21 or x > 9
c. -9 < x < 9
d. x > -21 or x < 9

(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.