Which statement defines a circle with radius r ?
A. a line that is distance r from a given point
B. all points that are distance r from a central point
C. a line segment of length 2πr passing through a
given point
D. all points on a plane that are distance r from a
central point

What are the coordinates of the hole in the graph of the function f(x) ? f(x)=x2−9x−3 enter your answer in the boxes.

Julia chooses a card at random from her set of cards. what is the probability that the card is labeled cat or hamster?

Four airplanes carrying a total of 400 passengersarrive at the detroit airport. the airplanes carry, respectively,50, 80, 110, and 160 passengers.a) one of the 400 passengers is selected uniformly at random.let x denote the number of passengers that were on theairplane carrying the randomly selected passenger. find var(x)for x as given in the problemb) one of the 4 airplane drivers is also selected uniformly atrandom. let y denote the number of passengers on the chosen driver’s airplane. find var(y) for y as given in the problem