SOLUTION: Write the nth term as a function of n. 81, 27, 9, 3, 1, .... I already know it is dividing by 3 each time but I don't know how to express this as a function of n. Help please

Algebra ->  Sequences-and-series -> SOLUTION: Write the nth term as a function of n. 81, 27, 9, 3, 1, .... I already know it is dividing by 3 each time but I don't know how to express this as a function of n. Help please      Log On