Type a coffee costs bill 4.30 per pound, and type b coffee costs 5.70 per pound. this month, bill made 168 pounds of the blend, for a total cost of 855.40 . how many pounds of type b coffee did he use?

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.

Which graph corresponds to the function f(x) = x2 + 4x – 1?

Aswimming pool had 2.5 million liters of water in it. some water evaporated, and then the pool only had 22 million liters of water in it. what percent of the water evaporated?