Question

A tree is growing at a constant rate. It is recorded that at the 7th year since it was planted it was at a height of 25 feet. It was recorded again at the 10th year since it was planted and it was at a height of 31 feet. How much does the tree grow every year?

Answer 1

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Answer:

2 feet per year

Explanation:

In the 3 years between the 7th and 10th, the tree grew 6 feet from 25 ft to 31 ft. The rate of growth is ...

(6 ft)/(3 yr) = (6/3) ft/yr = 2 ft/yr