Hello from MrBillDoesMath!
Answer:
{3, -1, -5}
Discussion:
f(x) = -x + 6
f(3) = -3 + 6 = 3
f(7) = -7 + 6 = -1
f(11) = -11 + 6 = -5
The range of f is the set of computed y values (i.e. 3, -1, -5). This is the second choice from the top of the list
Thank you,
MrB