[yourdeath01]

How the hell do you solve this.

experimental average amount of energy(calories) released per gram(g) of nut burned.

http://i.imgur.com/LyLExdq.png

So i have solved all of the cells but the current cell is confusing the hell out of me am i suposed to add the three cells above or what? really confused stuck for any hour.

[Arkcon]

I'd like to welcome you, yourdeath01: to the Chemical Forums.  According to the Forum Rules{click}, we want to see your attempt, so please click on that link, read the contents, and comply with our rules, so we can help you. 

I attached the image, so people will know what you're talking about.  Not that it really helps -- the image doesn't have the calculations.  Can you write those out and show us what you have?