Equations When a new charter school opened in 1990 there were 820 students enrolled Using function notation write a formula representing the number N of students attending this charter school t years after 1990 assuming that the student population N t a Decreases 30 students per year b Increases 17 per year c Increases 8 3 per year d Decreases 8 6 per year e Remains constant does not change g Increases 46 students per year N t N t N t N t N t