00:01
Okay, so i see that you need help with this question and it states, using the results from exercise 97, write a short paragraph describing the concepts of slope and average rate of change.
00:11
So in 1990, penn state university had an enrollment of 75 ,365.
00:20
So that was 1990.
00:23
We're also going to call that year zero.
00:26
By 2009, so that's 19 years later, the enrollment had increased to 87 ,163.
00:36
What is the average annual change in enrollment from 1990 to 2009? so i'm going to take 87 ,163 minus 75 ,365 and that is 11 ,797 and over 19.
00:57
So it grows 1 ,000, i'm sorry, 11 ,797 students every 19 years.
01:10
And so use the average annual change of enrollment to estimate the population, to estimate the enrollments for 1995, 2005, and 2000.
01:26
So 11 ,797 divided by 19 and that equals 620 or we can say 621 per year.
01:41
So i would write an equation y equals 621x plus 75 ,365.
01:50
And for 1995, which is five years from that, you can use equals 621 times 5 plus 75 ,365 and that equals 3 ,000, no that's not right, oh, plus 75 ,365...