If you are trying to calculate how many people like certain flavors of ice cream.
0.5! This can be explained because 1/2 x 1/2 is equal to 0.25 so if we add another 0.25, it will be 0.5
Just use distributive property (multiply 7 times 7k and 7 times -10 )
This equals 49k-70
Hope this helped :)
The advantage is that you can visibly see the difference in the data. Disadvantage of line plots would be that not as appealing.
