For the first question, find the mean, first quartile, minimum, maximum, and third quartile, and then graph on the x-axis (a number line). Then, create a line through the median, first, and third quartile. Lastly, connect the median, first and third quartile to make a box. Google images for more details.
Answer:
I would say 5 kg because you get more kg with a little bit more money added
Answer:
No! The answer is not zero. There can be infinite solutions for this equation.
Hope it helps!