What is the first quartile of the data displayed in this box-and-whisker plot? A)49 B)41 C)37 D)35
2 answers:
Answer:
The correct option is C. The first quartile of the data displayed in this box-and-whisker plot is 37.
Step-by-step explanation:
In a box plot,
Point 1: Left end point of the line represents the minimum value of the data set.
Point 2: Left side of the box represent first quartile (Q₁) of the data set.
Point 3: Line inside the box represents Median of the data set.
Point 4: Right side of the box represent third quartile (Q₃) of the data set.
Point 5: Right end point of the line represents the maximum value of the data set.
From the given box-and-whisker plot it is clear that left side of the box is at 37, So, the first quartile of the data displayed in this box-and-whisker plot is 37.
Therefore correct option is C.
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Answer:
For a monthly cost of at least $7 and at most $8, you can have between 100 and 110 calling minutes.
Step-by-step explanation:
The problem states that the monthly cost of a celular plan is modeled by the following function:
In which C(x) is the monthly cost and x is the number of calling minutes.
How many calling minutes are needed for a monthly cost of at least $7?
This can be solved by the following inequality:
For a monthly cost of at least $7, you need to have at least 100 calling minutes.
How many calling minutes are needed for a monthly cost of at most 8:
For a monthly cost of at most $8, you need to have at most 110 calling minutes.
For a monthly cost of at least $7 and at most $8, you can have between 100 and 110 calling minutes.