When it asks this question, ultimately you want to plug 11 into x because its f(x). 11=-2+5.
Then you subtract 5 on both sides because of the opposite of addition is subtraction.
6=-2x
now divide on both sides
x=-3
It is four. So two and two you add them together to be four. Good job. Your learning :)
i think its 3√3 because that seems like the logical answer to me.
It decreases by 0.5
The original mean was 5.5
The new mean is 5
