A. f(n) = (3) n - 1; f (5) =405
b. f (n) = 6(3) n-1; f (5)= 486
c. f (n) =6(3) n; f (5) = 1,458
d. f(n) = 6(3) n+ 1; f (5) = 4,374
need the answer asap on a time limit

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