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#40330

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 from January 15 to January 18?

• 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.