Can someone help me solve this?

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.

41/17 as a decimal rounded to the nearest hundredth

Graph the function =gx+2x3 and give its domain and range using interval notation.