Susannah made the line plot below to show the distances she hiked each day in the past two weeks.
Distances Hiked

Then she wrote this sum to find the total number of miles she hiked
(5+ x 3) + (6 + x 5) + (74 x 2) (74 x 1) + (73 x 1)
Which of the following must be added to the sum to get the correct total?

Correct option: B -> (5 1/2) * 2

Step-by-step explanation:

We can observe the number of different distances she hiked:

5 1/4, 5 1/2, 6 1/4, 7 1/4, 7 1/2 and 7 3/4.

In Susannah's equation, we have only 5 parts, so it's missing one distance, that is 5 1/2.

In this distance there are 2 circles, so she hiked this distance two times. Then, the missing value that Susannah should sum is:

(5 1/2) * 2

Correct option: B