someone please help me with this

PROCESS a) Derive an equation that given m, d, k and 0, you can compute a value for x, the distance in which the spring must be pulled back to hit the target. x = function (k, m, d, 0) Your derivation should include written notes explaining the physics of each step in your derivation. You can check your equation using the following example: Example: If the target is 5.0 m away (d) and the launcher is elevated 30 (0) and the spring is 0.044 kg (m), what distance should the spring be pulled back to land in the target area if k = 40N/m. (Answer: x = 0.25 m)