1 - 10
2 - 34
3 - 55
4 - 67
5 - 105
The table above shows the cumulative number of cookies eaten by Nick during five weeks this spring. How many cookies did Nick eat during week 3?
I said that it’s 11 but it’s supposed to be 21. Why?
The week 3 cumulative amount minus the week 2 cumulative amount…is that what you meant to do when you got 11?
I see what I did wrong. I substracted week 2 AND week 1