What trig function would I use to solve for X?

Suppose a man is heterozygous for heterochromia, an autosomal dominant disorder which causes two different‑colored eyes in an individual, produced 25‑offspring with his normal‑eyed wife. of their children, 15 were heterochromatic and 10 were‑normal. calculate the chi‑square value for this observation.

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1

The total number of dental clinics total for the last 12 months was recorded