A city sets up 14 rows of chairs for an outdoor concert. Each row has 2 more chairs than the previous row. If the first row has 10 chairs, how many chairs are in the 8th row?

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(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.