The amount of foreign earnings (in trillions of dollars) kept overseas can be approximated by the function f(x) = 0.218(1.28) , 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) $1.4 trillion (b) $2.3 trillion (a) The first full year in which the foreign earnings kept overseas exceeds $1.4 trillion is (Type a whole number.) (b) The first full year in which the foreign earnings kept overseas exceeds $2.3 trillion is (Type a whole number.) Next