Evaluate the following. vert 12vert =12 vert -4vert =

## Step 1The problem involves the concept of absolute value. The absolute value of a number is its distance from zero on the number line, regardless of direction. It is always a non-negative number.## Step 2The absolute value of a number is denoted as . If is positive or zero, then . If is negative, then .## Step 3In this problem, we are asked to find the absolute value of -4. Since -4 is a negative number, we apply the rule that the absolute value of a negative number is the number without the negative sign.