1. What is the average rate of change of f(x) from x =-2 to x = 5? f(x) = 3r? - 57 + 13
2. What is the average rate of change of f(x) from x=-3 to x=6?
f(x) = x2 + 4x - 15
3. What is the average rate of change of f(x) from x=-2 to x=2?
f(x) = rº - 3x + 2

(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.