Arectangular garden is fenced on all sides with 256 feet of fencing. the garden is 4 feet shorter than it length. what's the width and the length of the garden

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)

Answer! if you don’t mind, can you explain

Acount went up from 450 to 600. what was the approximate percent increase?