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#16359

data analysis

hard

50 sec

The scatterplot shows the relationship between the length of time $y$ , in hours, a certain bird spent in flight and the number of days after January 11, $x$ .

What is the average rate of change, in hours per day, of the length of time the bird spent in flight on January 17 to the length of time the bird spent in flight on January 19?

• Up to 5 characters (6 if negative). Only numbers, decimal (.), fraction (/), negative (-).
• Fractions must be in lowest terms.
• Mixed numbers must be converted to improper fractions.