Alexis took an elevator one floor down from the lobby of her office building to the parking garage. then she took the elevator back up 5 floors to her office. she described her movement with this expression:

1+5

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?

The weight of a full steel bead tire is approximately 800 grams, while a fighter wheel weighs only 700 grams. what is the weight of each tire in pounds?

B. two events are dependent if the occurrence of one event changes to occurrence of the second event. true or false