Please help me out guys, Thank you.

I am very poor at mathematics​

Find the multiplicative inverse of 8-12i

Find the commission on a $590.00 sale if the commission is 15%.

(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.