Will give medal!!

The table below represents the velocity of a car as a function of time:

Time Velocity
(hour) (miles /hours)
x y
0 50
1 52
2 54
3 56

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.

Part C: What would be the domain of the function if the velocity of the car was measured until it reached 60 miles/hour and the car does not change motion?

I already have part a done, I just need B and C

Question

Will give medal!!

The table below represents the velocity of a car as a function of time:

Time Velocity 
(hour)  (miles /hours)
x          y
0	50
1	52
2	54
3	56

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.

Part C: What would be the domain of the function if the velocity of the car was measured until it reached 60 miles/hour and the car does not change motion? 

I already have part a done, I just need B and C

mikwind · Answer

The formula for any average is $$\frac{ \Delta y  }{ \Delta t }$$,  the delta t was given in the problem

mikwind · Answer

Hint: a change in velocity is called acceleration, so the average change in velocity is ...

mikwind · Answer

and for part c: v: 50, 52,54,56...60  this is clearly linear,   the domain would be, x goes from 0 to ...?