27-28 days, the actual answer is 27.4285714 days, but it depends on how you’re instructed to round your answer
I’m thinking 58.45? if that makes sense
Answer:

Step-by-step explanation:
Given


Required
Determine the average change
This is calculated as follows:

This gives:


Convert to improper fractions

Convert to multiplication




The answer is
a) 11/15
b) 1/18
It means the speed (velocity) was constant - the object traveled the same distance per time period throughout the graph.