The number N of AIDS cases diagnosed to date (in thousands) is approximated by N = −.37x2 + 59.5x + 247.26, where x is the number of years since 1990.† Assuming that this equation remains valid through 2011, determine when the number of diagnosed cases of AIDS was or will be
(a) 825,000
(b) 1.2 million
†Based on data from the U.S. Department of Health and Human Services.
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