Of the students in julia’s class, 0.5 eat lunch from home, 1/5 eat the school lunch and 30% each from the salad bar. if there are 200 students in the class, how many each lunch in the various forms. how would you prove all 200 students eat lunch?

(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.