The function f(x) = −x2 + 16x − 60 models the daily profit, in dollars, a shop makes for selling candles, where x is the number of candles sold.

Determine the vertex, and explain what it means in the context of the problem.

(6, 10); The vertex represents the maximum profit.
(6, 10); The vertex represents the minimum profit.
(8, 4); The vertex represents the minimum profit.
(8, 4); The vertex represents the maximum profit.