Please write out b in interval notation using brackets and parentheses

Use the graph of the function y =f(x) below to answer the questions. (a) Is f (-3) positive? 0,0,... (0,0) (0,0] O Yes O No (b) For which value(s) of x is f (x) > 0? [0,0) [0,0] OVO Write your answer using interval notation. (c) For which value(s) of x is f (x) = 0? X 5 ? If there is more than one value, separate them with commas