Posted by **Anonymous** on Monday, July 11, 2011 at 11:01am.

From 1993 to 2003 the cumulative number

N of AIDS cases in thousands can be approximated by

, where corresponds to

the year 1993.

N= -2x^2+ 76x + 430 x=0

- algebra -
**Henry**, Tuesday, July 12, 2011 at 9:15pm
N = -2x^2 + 76x + 430 = 0.

Solve, using the Quad. Formula and get:

x = 43, and -5.

Select + value of x:

x = 43,000 cases.

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