Graphing Polynomials: Solving Homework Questions 3 & 4

[Ishtar]

Homework help (polynomial graphing)

here is the problem:

[img=http://img267.imageshack.us/img267/3900/calculushelphd7.th.jpg]

i need help with questions 3, 4

The Attempt at a Solution

for number 3
i got more points from http://www40.statcan.ca/l01/cst01/prim11a.htm
and plotted them, but i don't get what's it mean by unrestricted domain
i graphed this
http://img528.imageshack.us/img528/8028/picgmk5.png [Broken]

for #4
i said its restricted to it because 2007 didn't happen yet (is tat right)

 

[HallsofIvy]

3 is just asking, "Suppose the graph continued. What would it look like?"

For 4- you are correct. The "domain" is the dates given and is initially "restricted" to between 1997 and 2001. If it were "unrestricted", that is, if you assume the function will be correct for later dates, what value would your functions give for 2007?

 

[Ishtar]

thank you