Ralph is 3 times as old as sara. in 6 years ralph will be only twice as old as sara will be then. find ralph’s age now. if x represents sara’s age now, which of the following expressions represents ralph’s age in six years?

(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.