9514 1404 393
Answer:
y = 250x +5000
Explanation:
The "initial" enrollment is 5000, when x=0 years after 1960.
The rate of change of enrollment is ...
change of enrollment / change in time
= (15000 -5000)/(2000 -1960)
= 10000/40 = 250 . . . . students per year
Then the desired equation is ...
y = 250x + 5000