What is the range of the function f(x) = 3x − 12 for the domain {-2, 2}? a. {3, 12} b. {-6, -18} c. {6, 18} d. {12, 3}

{-18, -6}

Step-by-step explanation:

Here there are only two inputs:  {-2, 2}.  There are only two outputs:  {f(-2), f(2)}, which, in turn, can be written as {3(-2) - 12, 3(2) - 12}, or {-18, -6}.  This corresponds to Answer B.

expression #3 is not equivalent. the others are.