Idk I have tried and failed miserably
English...because english subject is a part of our language worldwide and that can communicate all over the world...its just my opinion
Answer:

Step-by-step explanation:
Given: 76,45,64,80,92
Required: Determine the standard deviation
We start by calculating the mean

Where x-> 76,45,64,80,92 and n = 5



Subtract Mean (71.4) from each of the given data

Determine the absolute value of the above result

Square Individual Result

Calculate the mean of the above result to give the variance


Hence, Variance = 255.298
Standard Deviation is calculated by 



Answer:
Third option: The graph moves left 18 units.
Step-by-step explanation:
Some transformations for a function f(x) are shown below:
If
, the function is shifted up "k" units.
If
, the function is shifted down "k" units.
If
, the function is shifted left "k" units.
If
, the function is shifted right "k" units.
In this case, we can observe that graph of
is changed to
Since:

We can conclude that the function
is shifted left 18 units to get the function
.