Public high school enrollment: One model for the number of students enrolled in U.S. public high schools as a function of time since 1986 is Here N is the enrollment in millions of students, t is the...

Public high school enrollment: One model for the number of students enrolled in U.S. public high schools as a function of time since 1986 is

Here N is the enrollment in millions of students, t is the time in years since 1986, and the model is relevant from 1986 to 1996.

a. Use functional notation to express the number of students enrolled in U.S. public high schools in the year 1989, and then calculate that value.

b. Explain in practical terms what N (8) means and calculate that value.

c. In what year was the enrollment the smallest?