Let f (t) be the number of ducks in a lake t years after 1990. a. What does the statement f (6) = 27 mean? There will be 27 ducks in the lake 6 years from now. In 27 years, there will be 6 ducks in the lake. In 1996, there were 27 ducks in the lake. In 1996, there were 27 more ducks than in 1990. b. What does the statement f (11) = 37 mean? In the year 2001, there were 37 ducks in the lake. In 37 years, there will be 11 ducks in the lake. Every 11 years, there are 37 more ducks in the lake. There will be 37 ducks in the lake 11 years from now.