Suppose $\displaystyle {z}$ varies directly with $\displaystyle {y}$ and directly with the cube of $\displaystyle {x}$. If $\displaystyle {z}={3750}$ when $\displaystyle {x}={5}$ and $\displaystyle {y}={10}$, what is $\displaystyle {z}$ when $\displaystyle {x}={8}$ and $\displaystyle {y}={3}$?
$\displaystyle {z}=$ Preview Question 6