The number of new AIDS cases reported each year in the United States can be modeled by A(x) = − 680x2 + 1 9,307x − 74,310, where x is the number of years after 1980.
a. Graph the function, using a window of [0, 25J for x and [0, 75,000] for y. Set x Scl at 5 and yScl at 5000.
b. Find the vertex of the equation and interpret its meaning.
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