Help please I need help .Solve 0.1x=3 for x A. 3.100 B. 300.000 c. 2.900 D. 30.000 E. 3.000

(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.