students are encouraged to exercise at least 2 1/2 hours a week. Hector exercises about the same number of hours each week. during a 4 week period he exercises 11 1/2 hours. how many hours does he exercise per week?

(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.