corgicorgi93 corgicorgi93 08-12-2020 Mathematics contestada The formula f(x + 1) = Two-thirds(f(x)) defines a geometric sequence where f(1) = 18. Which explicit formula can be used to model the same sequence? f(x) = (18)(two-thirds)(x – 1) f (x) = 18 (x minus 1) Superscript two-thirds f (x) = 18 (two-thirds) Superscript x minus 1 f(x) = (18)x – 1