Last question on my unit test, please help.

Determine the fraction of total interest owed. after the fourth month of a 12-month loan: the numerator is: {(n + ) + (n + ) + (n + ) + (n + )} = , and the denominator is: {(n) + (n + 1) + + (n + )} = . therefore, the fraction is numerator/denominator (to the nearest tenth) =

X-intercept=-5 y-intercept=2 the equation of the line is

Answer! if you don’t mind, can you explain