What is the vertex of the graph of f of x is equal to start absolute value x minus 13 end absolute value plus 11 ?

The absolute-value function in vertex form is f(x) = |x − h| + k, with vertex (h, k). Here, f(x) = |x − 13| + 11, so h = 13 and k = 11. The vertex is (13, 11), choice A.

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