Which of the following expressions is equivalent to 24p - 18?

-6(-4p - 3)
2(-12p + 9)
-1(24p + 18)
6(4p - 3)

(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.