Answer:
A.
Step-by-step explanation:
The range of a function is the possible values of y = f(x). We have that the range is {0,12,20}. Then, to find the domain we equalize the function to each range value and find the possible values of x (domain).
In the case os 0 we have:
0 = 2x-4
4 = 2x
x = 4/2 = 2.
In the case of 12 we have:
12 = 2x-4
12+4 = 2x
16 = 2x
x = 16/2 = 8.
In the case of 20 we have:
20 = 2x-4
20+4 = 2x
24 = 2x
x = 24/2 =12.
The, the domain of the function with that range is {2,8,12}. Then the answer is A.
