Apply the distributive property to simplify the expression. −4(5x + 2)

a) 20x + 8
b) 20x − 8
c) −20x + 8
d) −20x − 8

(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.