Samuel his brother paint walls during his summer vacation. he charges $10 for the first room and $5 for each addition room (x) he paints. which equation could samuel use to find out many rooms he would have to paint to make $50 at one house?

(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.