Simon invested an amount of money in a savings account at 0.5%per annum compound interest. At the end of the three years, the amount in the savings account was £12180.90.
Work out how much money Simon invested in the savings account.

(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.