Very confused. I read and watched a video on it and it’s left me even more lost then before.

Find a number such that if you add 8 and divide the result by 4 you will get the same answer as if you subtracted 3 from the original number and divided by 2

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?

The population of a small rural town in the year 2006 was 2,459. the population can be modeled by the function below, where f(x residents and t is the number of years elapsed since 2006. f(t) = 2,459(0.92)