Question

Whats the absolute value of `abs(-18)`?

Answer 1

The absolute value of `abs(-18)=18`.

Explanation:

The absolute value of either a positive or a negative number is always positive. This is because the absolute value of a number is its distance from zero on a number line, and distance is always positive or zero.

A good resource is http://mathbitsnotebook.com/Algebra1/RealNumbers/RNAbsoluteValue.html