Which expression is equivalent to RootIndex 3 StartRoot StartFraction 10 x Superscript 5 Baseline Over 54 x Superscript 8 Baseline EndFraction EndRoot? Assume x not-equals 0. StartFraction RootIndex 3 StartRoot 10 x EndRoot Over 3 x squared EndFraction StartFraction x (RootIndex 3 StartRoot 5 x EndRoot) Over 3 EndFraction StartFraction 3 (RootIndex 3 StartRoot 5 x EndRoot) Over x EndFraction StartFraction RootIndex 3 StartRoot 5 EndRoot Over 3 x EndFraction

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)