Question
A tree is at present 9 feet tall. If every year it grows
1/9 of its height, what will be the height of the tree after three years?Solution
ATQ,
We’re told the tree is 9 feet tall now, and every year it grows by 1/9 of its current height . That means it's growing exponentially , not linearly. Let’s calculate year by year: Year 0 (present): Height = 9 feet Year 1: 
Year 2: 
Year 3: 
or 1000/81 = 12.34 feet
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