Find the domain and range for y= - 1/4x

The measure of angle 0 is 600 degrees

Gravel is being dumped from a conveyor belt at a rate of 25 ft3/min, and its coarseness is such that it forms a pile in the shape of a cone whose base diameter and height are always equal. how fast is the height of the pile increasing when the pile is 14 ft high? (round your answer to two decimal places.) ft/min

Astraight water slide is 175 feet above ground and is 200 feet long. what is the angle of depression to the bottom of the slide?