Math

Questions 16-18 refer to the following information.

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.
16
According to the information in the table, what is the approximate age of an American elm tree with a diameter of 12 inches?