Please can somebody help me Which intervals show f(x) decreasing? Check all that
apply.

(-2.5, -2]
[-2. -1.5)
(-1, 1)
(1.5,2)
[2, 2.5)
(2.5,3]

The answer would be the first one -2.5, -2 because those are the lowest numbers which would mean that the intervals are decreasing. ur welcome :)

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.