Answer:
19/31
Step-by-step explanation:
12+19=31
there are 19 guys names out of a total of 31 names.
Given function:

The minimum value of the function can be found by setting the first derivative of the function to zero.


Solving for x:


Substituting the value of x into the original function:

Hence, the minimum value in the given range is (-1, -0.368)
The question is a bit confusing can rephrase it?!
When a straight line is given the form:

m is the gradient. It shows how the value of y changes for an increase of x by 1.
So, in this case, the gradient is
4
The answer to the equation is the second option.