$$Q=\sqrt{\frac{3dK}{2h}}$$

The formula above is used to estimate the ideal quantity, $Q$, of items a store manager needs to order given the demand quantity, $d$, the setup cost per order, $K$; and the storage cost per item, $h$. Which of the following correctly expresses the setup cost per order in terms of hte other variables?

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We are tasked with solving for $K$, the setup cost per order.

$$Q=\sqrt{\frac{3dK}{2h}}$$ $$Q^2=\frac{3dK}{2h}$$ $$2hQ^2=3dK$$ $$\boxed{K=\frac{2hQ^2}{3d}}$$