Mashaal Masha
$2n+6=14$

A tree had a height of 6 feet when it was planted. The equation above can be used to find how many years $n$ it took the tree to reach a height of 14 feet. Which of the following is the best interpretation of the number 2 in this context?
Difficulty: Medium
A: 

The number of years it took the tree to double its height

B: 

The average number of feet that the tree grew per year

C: 

The height, in feet, of the tree when the tree was 1 year old

D: 

The average number of years it takes similar trees to grow 14 feet

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