Chris surveyed her classmates to find out how many e-mails they send per day. Then, she drew this line plot with the data. Use the line plot to answer questions about e-mails sent.

11

1

How many classmates were surveyed?

21

20

19

15

12

1

How many classmates sent fewer than 5 e-mails?

9

2

3

7

13

1

How many classmates sent at least 7 e-mails?

2

9

20

3

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