Answer:
Domain exists on all real values and it is expressed according to the notation:
(-∞, ∞)
Explanation:
The domain of a function is the values of the input variables x that will make the function exist.
Given the function f(x)=-16x^2+400
Since the variable x is a perfect square, this means that the function f(x) will exists for all values of x. The domain is expressed as:
(-∞, ∞)