The 1st choice (x - 9, y - 3) is the correct answer.
Take any of the corresponding coordinate points to find the rule that represents the translation:
D —> D’
(3, 5) —> (-6, 2)
(3 - 9, 5 - 3) = (-6, 2)
Counting the units from graph also shows this translation rule, seeing that hexagon DEFGHI moved 9 units to the left and 3 units down.
Hope this helps :)
1) Mean
The mean is given by the sum of the data divided by the number of data (4, in this case):

2) Standard deviation
The standard deviation is given by:

where

is the mean, that we already found at point 1), and N=4. Substituting data, we have:

75/60 is 1.25 and 1.25 times 6 is 7.5 but you can't produce a half widget so it is just 7