64, - 48, 36, - 27, ... Which formula can be used to describe the sequence? f (x + 1) = f (x) f (x + 1) = f (x) f (x) = f (x + 1) f (x) = f (x + 1)

Well, f (x+1) is the term after f (x)

this is a recursive formula thing

we see that it alternates from negative to positive so we must have a negatives somewhere

we see that each is 3/4 of the previous one, times a negative so

f (x+1) = (-3/4) f (x) is da formula