SubArea: Exponential equations and inequalitiesLevel: CProject ID: 2010008206Source Problem: 2010008207Accepted: 0Clonable: 1Easy: 0Solve the following inequality. \[ 3^{x-1}-3^{x+2}-3^{x+1}\geq -105\]\(x \in (-\infty;2 ] \)\(x \in [ 2;+\infty) \)\(x \in [ 3;+\infty) \)\(x \in (-\infty;3 ] \)