I have no clue on how to do this rn

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.

Which of the binomials below is a factor of this trinominal? x^2-13+30

Which linear function represents the line given by the point-slope equation y + 1 = –3(x – 5)?