Answer:
Step-by-step explanation:
To determine whether each number is rational or irrational:
1. \(1.245\)
- Rational: \(1.245\) is a rational number because it can be expressed as a fraction of two integers, \(1245/1000\).
2. \(3/5\)
- Rational: \(3/5\) is a rational number because it is a fraction of two integers.
3. \(3\pi\)
- Irrational: \(3\pi\) is an irrational number because it cannot be expressed as a fraction of two integers. \(\pi\) is an irrational number, and multiplying it by any rational number (such as \(3\)) will result in an irrational number. Therefore, \(3\pi\) is irrational.
