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

y = x2 + 3x + 2

Where x is the number of years and y is the number of trout in the millions.

What is the number of trout in the years 1975, 1980, and 1985? Describe the trend of the numbers of trout as the years increase.

What is it you do not understand? put time in x form, eg, in 1975, x=5