Question

a pine tree measured 40 and 1 over 2 feet tall. Over the next 7 and 1 over 2 years it grew to a height of 57 feet. During the 7 and 1 over 2 years, what was the average yearly growth rate of the height of the tree?

Answer 1

The height starts at 40.5 ft. Over 7.5 years, it grows to be 57.

40.5 + 7.5g = 57 where g = annual growth rate
7.5g = 16.5
g = 2.2 ft/yr