Based on the information given, it should be noted that the rate of change will be 5/2.
How to calculate the rate of change.
From the information given, it was stated that Ellen makes and sells bookmarks and she graphs the number of bookmarks sold compared to the total money earned.
Therefore, from the graph, the rate of change will be:
= (10 - 0)/(8 - 4)
= 10/4
= 5/2
In conclusion, the correct option is 5/2.
Learn more about rates on:
https://brainly.com/question/25793394
