Final answer:
The statement that is true for the given function f(x) = 4 • 2^a is that the domain is x > 0.
Step-by-step explanation:
The given function is f(x) = 4 • 2a. The statement that is true for this function is OD. The domain is x > 0. The domain refers to the set of all possible input values for a function. In this case, since the base of the exponent is positive (2), the function is only defined for positive values of x.
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