The cost of producing x units of a commodity per week is C(x)=0.3x3-9x+34x+500 Find all values of x where C "(x)=0.How are these levels of production related to the graph of the marginal co- Ox-1. It corresponds to a minimum on the graph of C(x). COX-1. It corresponds to a maximum on the graph of C '(x). Ox-10. It corresponds to a point of inflection on the graph of C '(x). Ox-10. It corresponds to a minimum on the graph of C '(x).