Me with this equation!

n-5
= 11
3

possible answers:

a: 16/3
b: 28
c: 31
d: 38

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

The table shown below gives the approximate enrollment at the university of michigan every fifty years. how many more students were enrolled at the university of michigan in 1950 than in 1900?

What is the y-intercept of the line with the equation 3x + 4y = 12?