Suppose that y varies jointly with w and x and inversely with z and y = 540 when w = 15, x = 30, and z = 5. Write the equation that models the relationship.
y = 6x/wz
y = x/6wz
y = 6wx/z
y = z/6wx
y = 6x/wz
y = x/6wz
y = 6wx/z
y = z/6wx