Dan invests £22000 into his bank account. He receives 2.5% per year simple interest.
How much will Dan have after 3 years?
Give your answer to the nearest penny where appropriate.

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.

What is always true about a positive integer raised to a negative odd power?

Find the dimensions of the circle. area = 64π in.² r= in.