A grocery store sells 4000 cases of canned soup per year. By averaging costs to purchase soup and to pay storage costs, the owner has determined that if $x$ cases are ordered at a time, the yearly inventory cost, $C,$ can be modeled by $C=\frac{10,000}{x}+3 x$ The graph of this model is shown on the right. Use this information to solve Exercises.
How many cases should be ordered at a time for yearly inventory costs to be $\$ 350 ?$ Identify your solutions as points on the graph.