Which set of algebra tiles represents the sentence below? Jemel spent 6 fewer dollars.
6 boxes contain negative x and 1 box contains a plus sign.

1 box contains negative x and 6 boxes contain plus signs.

1 box contains x and 6 boxes contain minus signs.

6 boxes contain x and 1 box contains a minus sign.

(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.