Answer:
The domain of the function is all real numbers.
The range is of the function is all multiples of 4
Explanation:
The function given is a floor function, meaning any value between [] is rounded down to the nearest integer; therefore, the number in [] is always an integer.
Then the value of y can be written as
we can see here that any value of y we get is always a multiple of 4; therefore, the range of the function is all multiples of 4.