Linear Equations When a new charter school opened in 1993, there were 440 students enrolled. Write a formula for the equation N, representing the number of students attending this charter school t years after 1993, assuming that the student population: Increased by 36 students per year N: Decreased by 24 students per year N || = Increased by 20 students every 2 years N || Decreased by 40 students every 4 years N = = Remained constant (did not change) Increased by 5 students every semester (twice each year) N N =