Answer:

which agrees with answer C in your list of possible answers.
Step-by-step explanation:
We can use the general point-slope form of a line of slope m and going through the point
:

which in our case, given the info on the slope (2) and the point (-1, 4) becomes:

Answer:
2.0
Step-by-step explanation:
Couldn't really understnd what you wrote but I'll assume it's the standard deviation of a fair, 7-sided die
The standard deviation is just the square root of the variance (which is just the second moment minus the first moment squared)
The first moment (AKA the average is..)

The second moment is..


Do 1200 minus 140 and then divide the answer by 20
It would be 0.125 for the first answer