Estimate the line of best fit using two points on the line. 100+
80
60
9
(5, 60)
40+
(3, 44)
20
2
4
6
8
10
O y = 8x + 20
O y = -8x + 16
y = -5x + 16
O y = 5x + 20

What is the standard deviation of the following data set rounded to the nearest tenth? 3, 17, 18, 15, 12, 21, 9

Agroup of randomly selected members of the foodies food club were asked to pick their favorite type of food. the bar graph below shows the results of the survey. there are 244 members in the foodies.

Use mathematical induction to prove the statement is true for all positive integers n, or show why it is false. 1^2 + 4^2 + 7^2 + + (3n - 2)^2 = [n(6n^2-3n-1)/2]