SOLUTION: The amount of land in the US farms may be modeled by F(t)= 115.1(0.9352)^t + 900 million acres. According to the model in what year will the amount of land in the US drop bellow 9

Question 241422: The amount of land in the US farms may be modeled by F(t)= 115.1(0.9352)^t + 900 million acres. According to the model in what year will the amount of land in the US drop bellow 910 million acres. Could i please get help do not understand how to solve this problem.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
There isn't enough information to know what
year it's starting at.
I'm assuming that is the number of years
that have passed, and is the 1st year

million acres the 1st year
When does the land total million acres?

Subtract from both sides

Take the log to the base of both sides, noting that

and

is about equal to 36 years and 5 months.
Sometime in the 5th month of the 36th year,
the farm acres drops below

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