The number of trout in America, since 1970, is given by the following:

y = x^2 + 3x + 2, where x is the number of years and y is the number of trout in millions.

What is the number of trout in the years 1975, 1980, and 1985?

1975 ---> x = 5

y = 5^2 + 3(5) + 2 = 42 million

repeat for the other years

(silly question, assumes the number of trout keeps increasing,
e.g. in 2020 we would have 50^2 + 3(50)+2 or 2652 million trout)