Answer:
The scatter plot of the given data is shown below.
Step-by-step explanation:
The given data is
Time (years) Number of participants
3 22
6 25
9 28
12 14
15 17
18 20
21 15
24 9
In the scatter plot the x-axis represents the time in years and the y intercept represents the number of participants.
The scatter plot of the given data is shown below.
√8 is between 2 and 3, because 2²=4<8, but 3²=9>8. Also, our value is closer to 3 than to 2, so it is more than 2.5 and we have C and D options left.
Among these two numbers we find the one which is closer to √8.
C. 27=√729 ⇒ 2.7=√7.29
D. 28=√784 ⇒ <u>2.8=√7.84</u>
Hence our answer is D) 2.8