Consider the following data:

Year	Federal Funds ($ billions)
1965	1.82
1970	2.28
1975	3.42
1980	5.80
1985	8.84
1990	12.61
1995	15.68
1998	18.48
1999	20.24
2000	21.02

(a)

Create a quadratic function that models the data.

Let y be the population in millions and x be the number of from 1960.

That is x = 0 for 1960, x = 10 for 1970, x = 20 for 1980 and so on.

So the table becomes,

x	y
5	1.82
10	2.28
15	3.42
20	5.80
25	8.84
30	12.61
35	15.68
38	18.48
39	20.24
40	21.02