When a new charter school opened in 1992, there were 230 students enrolled. Write a formula for the equationN', representing the number of students attending this charter schoolt'years after 1992, assuming that the student population:

Increased by 24 students per year N=________

Increased by 44 students every 2 years N=________

Decreased by 32 students every 4 years N=________

Increased by 5 students every semester (twice each year) N=__________