My IXL Learning Assessment Analytics MM.7 Write a formula for a geometric sequence 05V ()Write an equation to describe the sequence below, and then find the 4th term. Use n to represent the position of a term in the sequence, where n = 1 for the first term. 9, 27, 81, ... ()) Write your answer using decimals and integers. (1) an = )n - 1 a4 = Submit Next up Done for now? Try these next: Convert a recursive formula to an explicit formula Write rules for sequences Convert between explicit and recursive formulas: geometric seque.. Identify arithmetic and geometric series Convergent and divergent geometric series Find recursive and explicit formulas O CE acer