0 and 1 in exponents

Algebra Level 3

How many statement(s) below is/are correct?

Statement 1: \(1^x = 1\) for all real values of \(x\).
Statement 2: \(x^1 = 1\) for all real values of \(x\).
Statement 3: \(0^x = 0\) for all real values of \(x\).
Statement 4: \(x^0 = 1\) for all real values of \(x\).