The table below represents the displacement of a turtle from its nest as a function of time:

time (hour) | displacement from nest (miles
x | y
0 | 5
1 | 27
2 | 49
3 | 71
4 | 93

part a: what is the y-intercept of the function, and what does this tell you about the turtle? (4 points)

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)