AIDS Cases From 1993 to 2003 the cumulative number N of AIDS cases in thousands can be approximated by N=-2xsquare+76x+430, where x=0 corresponds to the year 1993.
Year 1993 1995 1997 1999 2001 2003
cases 422 565 677 762 844 930
(a) Use the equation to find N for each year in the table.
(b) Discuss how well this equation approximates the data.
(c) Rewrite the equation with the right side completely factored.
(d) Use your equation from part (c) to find N for each year in the table. Do your answers agree with those found in part (a)?