Which statement describes an interaction between the biosphere and the atmosphere that is related to photosynthesis? A. During photosynthesis. plant roots take in water from soil.

B. During photosynthesis. plants take in carbon dioxide from the air.

C. Through photosynthesis, energy stored in plants is released into the air.

D. Through photosynthesis, energy stored in plants is transferred to humans who eat them

Which of the following represents a number squared is equal to twenty more than nine times that number ? a) x squared = 9x + 20 b) x squared = 20x + 9 c) x squared > 9 + 20x d) x squared = 9 + x + 20

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

In which form is the following function written? y = - 2(x – 3)(x + 5)