Describe the graph of on [0, 3). Be specific in your description.

Answer:

On the interval [0, 3), the graph of y 4⌊x 2⌋ consists of three horizontal steps. For 0 ≤ x < 1, the step is at y 8. For 1 ≤ x < 2, the step is at y 12. For 2 ≤ x < 3, the step is at y 16. Each step has a closed circle at the left endpoint and an open circle at the right endpoint.