Jim buys his school supplies in bulk. on one particular shopping trip he bought 5 red pens at $1.29 each, 3 blue pens at $1.49 each, 6 green pens at $1.79 each and 9 black pens at $0.99 each. what was the average cost of a pen? round to the nearest cent.

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.

Rewrite the following without an exponent. (5/8)-1

Whit h equation best represents this situation the number 98 increased by an unknown number equal to 120