Sam saves money for a bike by
putting $2 in an account the first
week, $4 the second week, $8 the
third week and continues that
pattern. Sam had $25 in his account
originally.

The average human heart beats 72 beats per minute. how many times does it beat in 15 seconds?

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.

The average length of a king cobra is 3.7 m. the record length is 1.88 m longer than the average. how long is the record holder?