Read the following SAT test question and then click on a button to select your answer.

The function f is graphed in the x y-plane above. If the function g is defined by g(x) = f(x)+4, for how many values of x between -5 and 15 does g(x) equal 0?

(A) None
(B) One
(C) Two
(D) Three
(E) More than three

来源:可可英语 http://www.kekenet.com/sat/201509/396747.shtml