Half of a number decreased by 8 is -3

Which compound inequality could be represented by the graph?

(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.

Find the length of the normal and the angle it makes with the positive x-axis. (see pictured below)