Answer:
It could be because it shows trends and shows outliers and all the data in a way that makes sense
Step-by-step explanation:
He needs 6 litres of the 20% and 2 litres of the 60% a simple trial and error method will do in this type of equation
Answer:

Step-by-step explanation:




It's going to be going up. That means the answer is b.
Hope this helped☺☺