Given d = {x | x is a whole number}. e = {x | x is a perfect square between 49 and 100}. f = {x | x is an even number between 10 and 20}. 1.the expression d∪f means (64 and 81) or (all whole numbers). 2.the expression d∩f means (16,22,24,18) or (12,14,16,18). 3.the expression d∩e means (all whole numbers) or (64,81). 4.the expression e∩f means (all whole numbers) or (empty set). 5.the expression d∩(e∪f) means (empty set) or (81,64,12,14,16,18)

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)