Steve repairs elevators. when he is called to a job he uses the stairwell to go to the floor on which the elevator is located. in the modis building, he climbs 22 steps for every 15 feet of horizontal travel. in the sears tower, he climbs 17 steps for every 7 feet of horizontal travel. part a. what is the rate of change for each stairwell? part b. which stairwell will be easier to climb? explain your reasoning.

The table below represents the displacement of a fish from its reef as a function of time: time (hours) x displacement from reef (feet) y 0 4 1 64 2 124 3 184 4 244 part a: what is the y-intercept of the function, and what does this tell you about the fish? (4 points) part b: calculate the average rate of change of the function represented by the table between x = 1 to x = 3 hours, and tell what the average rate represents. (4 points) part c: what would be the domain of the function if the fish continued to swim at this rate until it traveled 724 feet from the reef? (2 points)