(1 point) Use the given graph of the function on the interval (0,8] to answer the following questions. 1. Where does the function f have a local maximum?
Answer (separate by commas): x=
2. Where does the function f have a local minimum?
Answer (separate by commas): x=
3. What is the global maximum of f?
Answer (write 'none' if there is none):
4. What is the global minimum of f?
Answer (write 'none' if there is none):