The piecewise function f(x) is graphed below. what is the value of f(5)? f(5) = –1 f(5) = 3 f(5) = 5 f(5) is undefined

In this piecewise function, f(5) = -1. 

In order to find which 5 to use when it is a point that is graphed twice, always look for the closed circle. The open circle means not included, whereas the closed circle means also included. Since the closed circle is at -1, then we know that is the value of f(5).