Pleasee help Which set of ordered pairs does not represent a function?

A\{(8, -9), (7, -3), (6, -9), (9, 7)\}{(8,−9),(7,−3),(6,−9),(9,7)}
B\{(-4, 5), (1, 0), (1, -3), (8, 3)\}{(−4,5),(1,0),(1,−3),(8,3)}
C\{(-7, 5), (5, 5), (-3, 9), (0, -3)\}{(−7,5),(5,5),(−3,9),(0,−3)} D\{(5, -2), (1, -7), (-3, -3), (-4, -2)\}{(5,−2),(1,−7),(−3,−3),(−4,−2) }

If g(x) is an odd function, which function must be an even function?

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?

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)