have a math equation and i would like to know how to input it into my ti-84 plus silver graphing calculator here is the question

Federal Debt The table gives the per capita debt for the united states for several years
year debt
1950 1688
1960 1572
1970 1807
1980 3981
1990 12848
1994 15750

y=0.255t^3-4.096t^2+1570.417 where y represents the per capita debt and t is the time in years with t=0 corresponding to 1950