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