You can substitute the o and i for a y or x if you need to. Hope this helps!
Answer:
I think is the last one I don't know but I can give you the explanation down to the step by step equation
Step-by-step explanation:
In a box plot the left side the left corners of that box represents Q1, the right corners of the box represents Q3. The line inside the box represents the median of the data
Yes because 56/8 = 7
And 72/8 = 9.
Together they make 7/9.
The required formula is:

Therefore the probability of A given B is:
we have the numbers

we know that
The sum of a number and its additive inverse is 0
so

therefore
the number n is equal to 
the sum is equal to zero
the answer Part a) and Part b) in the attached figure