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A study of 900 working women showed that their feelings changed throughout the day.
The line graph shows 15 different times in a day and the average level of happiness for
the women at each time. Based on the information given by the graph, represent the set
using the roster method.
(x) x is a time of the day when 3< average level of happiness Choose the correct answer below.
OA (12, 20, 21}
OB. (12)
OC. (20)
OD. (20,21)
4
O Points: 0 of 1
Average Level of Happiness
Average Level of Happiness
at Different Times of Day
Q
noon
10 p.m.
8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
Time of Day