Answer:
See explaination and attachment
Step-by-step explanation:
Please kindly check attachment for the step by step solution of the given problem.
I have the detailed answer as an attachment.

As, 

=0.301029+0.845098+1.13943
=2.26007
=2.260(approximate)
The Numerator is 1, which is the top. The Denominator is the 8. I like to remember (D)own is the (D)enominator.
Answer:
23 pretzels
Step-by-step explanation:
The range value is obtained by taken the difference between the maximum and minimum values ;
The range = maximum - minimum
From the box and whisker plot attached ; the maximum value = 68
Minimum value = 45
Hence, the range in the number of pretzels :
68 - 45 = 23
I rejected -5 as the base cannot be a negative value as it is impossible.