Question

Why is −318 a rational number? A. It is rational because all negative numbers are rational. B. It is rational because all integers are rational. C. It is rational because it can be expressed as a repeating decimal. D. It is rational because it can be expressed as a terminating decimal.

Answer 1

The correct answer is the option B: It is rational because all integers are rational.

Explanation:

To begin with, a rational number is the one that can be expressed as a fraction of two integers and that implicates all integers, both positives and negatives. Moreover, there are some rational numbers that can be expressed as well as a repeating number and others that can be expressed as a terminating number and all that will depend on the last number that the division will cause. So to sum up, -318 is a rational number because it is an integer and all of them can be divided and expressed as a fraction of two integers.