What is the average rate of change of f over the interval [-3,9]

The average rate of change of a function on an interval [a, b] is equal to . So, the average rate of change of f on the interval [-3, 9] is equal to .

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.