The midpoint is: (-4.5,8.5)
If it was in standard notation it would be very confusing to add the number of cells and it would be less organized.
I think it’s 51.6% because 8.3% interest at the rate of 6 years is just 8.3 multiplied by 6 which is 51.6
First is pears ,next is apple, and the last is oranges. 3,900, 3800, 3500. I hope that this helps.