Question

One method of calculating the approximate age, in years, of a tree of a particular species is to multiply the diameter of the tree, in inches, by a constant called the growth factor for that species. The table above gives the growth factors for eight species of trees.

According to the information in the table, what is the approximate age of an American elm tree with a diameter of 12 inches?

- 24 years
- 36 years
- 40 years
- 48 years

## The correct answer is: 48 years

### Solution:- Choice D is correct. According to the given information, multiplying a tree species’ growth factor by the tree’s diameter is a method to approximate the age of the tree. Multiplying the growth factor, 4.0, of the American elm given in the table by the given diameter of 12 inches

Approximate age = Growth factor ×diameter

= 4.0× 12

= 48 years.

Choices A, B, and C are incorrect because they do not result from multiplying the given

diameter of an American elm tree with that tree species’ growth factor

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Online Survey

Paper Survey

Telephonic Survey

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**Note:**

Whenever there is an equation with a square root involved, first we try to remove that square root to get a clear picture of the equation. It is easier to operate on an equation with no square roots or log or inverse.