Final answer:
The domain of the function f(x) = 3x for the given range {-7, -1, 3, 11} is {-7, -1, 3, 11}.
Step-by-step explanation:
The domain of a function represents the set of all possible input values (x-values) for the function. In this case, the function is f(x) = 3x and the given range is {-7, -1, 3, 11}. To find the domain, we need to determine which values of x will produce the values in the range. Since the range includes all four values, the domain will include the corresponding x-values for each of these range values. So, the domain is B. {-7, -1, 3, 11}.