What are the domain and range of the step function with the equation? f of x is equal to negative 3 lceil x rceil

The ceiling function is defined for every real number, so the domain is all real numbers. For any real x, ⌈x⌉ is an integer, and multiplying it by −3 gives an integer multiple of 3. Thus the range is all integer multiples of 3, as stated in choice A.

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