The class I am taking is called Brief Calculus - I am uncertain if this is the correct forum to post this question. I am certain someone will tell me if I'm in the wrong location. It is an online class and I cannot locate any help in either the textbook or none of the on-line examples are in this format. The first step in the problem is really where I am struggling. Any help would be appreciated

Find the x-value of all points wher the function below has any relative extrema Find the value(s) of any relative extrema.

G(x) = 6x + 7x^ 6/7