What is the difference between a solid boundary line and a dashed boundary line when graphing an inequality?

Find the sum of the first 8 terms of the following sequence. round to the nearest hundredth if necessary.

(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.

2x + 3y = 17 5x + 6y = 32 usibg method if elimination