Answer:
60 miles per our.
Explanation:
To calculate the rate change you have to do the math as follows;
- You have to know the change in distance remaining from every two hour. The change can be calculated by substracting the distance remaining:
- 480-360: 120 miles
- 360-240:120 miles
- 240-120: 120 miles
2. Then you calculate the time difference, also substracting the value of next cell to the upper inmediate:
- 4-2 hour: 2 hour
- 6-4 hour: 2 hour
- 8-6 hour: 2 hour
Then you calculate the rate:
120miles/2 hour= 60 miles per hour
120miles/2 hour= 60 miles per hour
120miles/2 hour= 60 miles per hour
So it is a constant rate of 60 miles per hour.