00:02
Okay, so the table.
00:08
So here the question is, the table shows the projection of population of country from 2000 to 200, okay? answer part a through part c.
00:22
So part a, you need to find a linear function that model this data, with x equals the number of year after 2000, and f of x equal to the population in millions, okay? here, it's not very easy to find a linear equation, because not every point is on the line.
00:41
So here i use excel to type in on the data and i plot a graph.
00:47
So here, as you can see, we got the equation, f of x equals the answer is 2 .9155 times x plus 270.
01:17
Okay.
01:19
That's a point 22.
01:20
2.
01:23
So that's answer for part a.
01:30
You may have different results, but here, as long as you get a similar results, you'll be fine.
01:37
Okay.
01:39
For part b, find f of 65.
01:45
So we just plug x equals 65 into the function of f of x.
01:51
So you find 2 .915 times 65 plus 2 .7.
02:08
So let me use the calculator to find the result...