Helppp I struggle with math only answer if you know

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) =

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?

Extra points! find the missing dimension! need asap