The age of a tree when the diameter is 11 inches is 80.
<h3>What is the age of the tree?</h3>
The age of the tree increases by 10 with a 1 inch increase in the diameter of the trunk. This represents a linear increase.
The equation that can be used to represent the age of a tree given its diameter is :
age of the tree when the diameter is 4 inches + [(difference between 11 inches and 4 inches) x rate of change in age)
10 + (10 x 7) = 80
To learn more about linear functions, please check: brainly.com/question/26434260
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