Question
The amount of foreign earnings​ (in trillions of​ dollars) kept overseas can be approximated by the function
f(x)=0.232(1.29)^x​
where
x=5
corresponds to the year 2005. Find the first full year in which the foreign earnings kept overseas exceeds the following amounts.
 
​(a)  
​$1.51.5
trillion
​(b)
​ $2.62.6
trillion

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