The linear function that models the population of 0 rainbow smelt is y1 = -19.76x + 227, where
x = the years since 1990 and y1 = the number of
rainbow smelt.
e
The linear function that models the population of
bloater fish is Y2
=
The linear equation that determines when the two
populations were equal is
The solution is x = 11.33 years.