Which of the following rational numbers can be expressed as a repeating decimal: 1 or 3? (1 point)

Both 1 and 3 can be expressed as repeating decimals.

1/1 = 1.000...
3/1 = 3.000...

In both cases, the decimal representation is just the whole number followed by an infinite sequence of zeros, which is considered a repeating decimal.

To determine which of these rational numbers can be expressed as a repeating decimal, we need to check if they can be written in the form of a fraction \( \frac{a}{b} \), where \(a\) and \(b\) are integers and \(b\) is not equal to zero.

In this case, both 1 and 3 are integers, so they can be expressed as fractions.

- 1 can be written as \( \frac{1}{1} \), which is not a repeating decimal.
- 3 can be written as \( \frac{3}{1} \), which is also not a repeating decimal.

Therefore, neither 1 nor 3 can be expressed as a repeating decimal.