Jared bought 7 cans of paint. a can of red paint costs 3.75$ a can of black paint costs 2.75$. jared spent 22.25 in all. how many cans of black {b} and how many cans of red {r} did he buy.

(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.