Please help. i will mark brainliest for whoever is correct.

The table represents a function. what is f(-2)? a.-3 b. -1 c.1 d.3

(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.

Which of the following constants can be added to x2 - 3x to form a perfect square trinomial?