2^x=4096
i know the answer but i forgot the step how to do them can some one

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.

Aline has a slope of 1/4 and passes through point (0.4,-1/2). what is the value of the y-intercept?

Can someone me with this problem . show your work .