pre calc

The following polynomial approximates the rabbit population in a particular area.?
R(x)= -0.121x^5+2.952x^4+3500, where x is the number of years frm 1975. use a graphing calculator to describe the rabbit population from the rears 1975 to 1990.
how do you get started with this problem

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  1. at x = 0 --- we have 1975
    R(0) = 3500

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  2. actaully my teacher put 1995=0 i forgot to put that in the problem

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  3. no big deal, so 1995 --- > 0
    but what did he/she change 1990 to ?
    make the suitable changes

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