SubArea: Exponential FunctionsLevel: AProject ID: 1103037401Accepted: 1Clonable: 0Easy: 1The graph of the function \(3^x-9\) is below. What is the domain of \( f \)?\( (-\infty,\infty ) \)\( (-9,\infty ) \)\( (-\infty,9) \)\( [-9,\infty ) \)