Arectangular prism is completely packed with 90 cubes of edge length inch, without any gap or overlap. which of the following describes the volume of this rectangular prism? (5 points)

11 unit cubes and 1 smaller cube of volume cubic inch

22 unit cubes and 4 smaller cubes of volume cubic inch each

11 unit cubes and 2 smaller cubes of volume cubic inch each

22 unit cubes and 2 smaller cubes of volume cubic inch each

Does the problem involve permutations or? combinations? do not solve. the matching section of an exam has 4 questions and 7 possible answers. in how many different ways can a student answer the 4 ? questions, if none of the answer choices can be? repeated?

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

Your friend uses c=50p to find the total cost, c, for the people, p, entering a local amusement park what is the unit rate and what does it represent in the context of the situation?