The exponential growth formula is 3,400,000 x (1.09^t).
The year in which the grove would reach one billion board feet is 63.16 years.
The exponential growth formula usually has this form:
FV = P (1 + r)^n
3,400,000 x (1.09^t).
The year in which the grove would reach one billion board feet = (In 1,000,000,000 / 3,400,000) / 0.09 = 63.16 years
To learn more about exponential growth, please check: https://brainly.com/question/18760477
#SPJ1