For the school play adult tickets cost 4$ and children tickets cost 2$ natalie is working at the ticket counter and just sold 20$ worth of tickets what are all of the possible ticket combination for 20$ worth of tickets

(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.