SOMEONE PLEASE HELP! If I don’t get this done imma get my phone taken away! It would really mean a lot thank you!

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.

Find the domain and range of the following function f(x) = 51x - 21+ 4

Tell whether the two rates form a proportion