Rita lent rs6800 for 5 years at 5% p. a. interest , whereas mita lent rs 8600 for 4 year at 4%. who earned more interest and by how much

(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.