Answer:
- The interval [9, 10] is 1,375% greater than the interval [5, 8].
- The interval [9, 10] is 14.75 times greater than the interval [5, 8].
Explanation:
1. To solve this problem you must apply the following formula:

2. Let's calculate the average rate of change of each interval:
a) Interval [9,10]:

b) Interval [5,8]:

3. The difference is:

4. In percentage:

5. You have that the interval [9,10] is 14.75 times greater than the interval [5,8], as you can see below:
