He! evaluate f(–2) in the given function below. a. 2 b. 3 c. 1 d. –5

For x=-2, the solid dot indicates the function value is 3. The appropriate choice is ...
  B. 3

For this case the first thing you should do is observe the value of the function on the y-axis when the value of x is -2.
 We observe that when x = -2 we have two possible values:
 y = 1
 y = 3
 The value of y = 1 is discarded because we have a piecewise function with a gap in y = 1. Therefore, this value is not part of the range of the function.
 The value of y = 3 is part of the range of the function.
 
 When x=-2 the y value is:
 f (-2) = 3
 B. 3