Mason stands on the 5th step of a vertical ladder. the ladder has 15 steps, and the height difference between consecutive steps is 0.5m. h(n) models the height above the ground of mason's feet (in m) after moving n steps (if mason went down the ladder, n is negative). what is the domain of the function? explain your thinking. identify one value that does lie in the range of the function and one value the does not lie in the range of the function. explain your thinking.