In the duration of 5 years, the tree grows 15 inches each year
From the question, we are to determine how many inches the tree grows each year
First, we will calculate the difference in height
Initial height = 56 inches
Final height = 10 feet 11 inches = 131 inches
Difference in height = 131 inches - 56 inches
Difference in height = 75 inches
Now, for the rate at which the tree grows each year,
The rate at which the tree grows each year = 75 inches / 5 year
The rate at which the tree grows each year = 15 inches/year
Hence, the tree grows 15 inches each year.
Learn more on Calculating rate of growth here: https://brainly.com/question/15214747
#SPJ1