Answer:
{-15, -3, 9}
Explanation:
The range is the set formed by the images of the elements in the domain.
The image of -2 equals 6*(-2) - 3 = -15
The image of 0 equals 6*0 - 3 = -3
The image of 2 equals 6*2 - 3 = 9
Therefore the range is the set
{-15, -3, 9}