At a blood​ drive, 66 donors with type Oplus+ ​blood, 55 donors with type Aplus+ ​blood, and 22 donors with type Bplus+ blood are in line. In how many distinguishable ways can the donors be in​ line?

Researchers constructed two test sheets, each sheet including 20 photos of the faces of dog–owner pairs taken at a dog lovers' field festival. The 20 sets of dog–owner pairs on the two sheets were equivalent with respect to breed, diversity of appearance, and gender of owners. On the first sheet, the dogs were matched with their owners, while on the second sheet, the dogs and owners were deliberately mismatched. Three experiments were conducted, and in all experiments, subjects were asked to "choose the set of dog–owner pairs that resemble each other, Sheet 1 or Sheet 2," and were simply told the aim of the research was a "survey on dog–owner relationships." In the first experiment, the original sheets were shown to subjects; in the second experiment, just the "mouth region" of the owners was blacked out in all the pictures on both sheets; in the third experiment, just the "eye region" of the owners was blacked out. Subjects were assigned at random to the three experimental groups, and…

Before the United States vaccination began, Chickenpox caused more than 100 deaths, more than 10,000 hospitalizations and more than 4 million people had gotten chickenpox every year. Since the United States vaccination began in 1995 after about 15 years in 2010, there was a 90% decrease in deaths meaning fewer than 20 people died from chickenpox. 84% fewer hospitalizations, meaning fewer than 1,700 people are hospitalized for chickenpox. 92% fewer cases mean that fewer than 350,000 people get chickenpox every year. what is a equation that best fits with people getting chickenpox and what type of equation is this? exponential, linear, polynomial

Out of the four diagnose cells, how many demonstrate an observed cell count greater than what would be expected under independence between the neurologist ratings?