Answer:
g = 14
Step-by-step explanation:
g + 3 = 17
minus 3 from both sides
g = 14
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:

The answer is 80 because you add then subtract

Hey there! Our goal here is to isolate the variable on one side of the equation.

What is y+x?
Answer:
<span>= <span>x+<span>y</span></span></span>