Question

please help me, thank you:)
The table below represents the displacement of a turtle from its nest as a function of time:

Time(hour) x - Displacement from nest(miles) y
0 -5
1 - 27
2 - 49
3 - 71
4 - 93

Part B: Calculate the average rate of change of the function represented by the table between x = 1 to x = 4 hours, and tell what the average rate represents. (4 points)

Part C: What would be the domain of the function if the turtle continued to walk at this rate until it traveled 225 miles from the nest? (2 points)