Please help! Will venmo extra $5, just put number or tag in answer.

In a scenario where all inputs are variable we a firm that is producing where K = 8, L = 2, w = 3, v = 1 and the MRTS at that point = 4. Assuming there is no corner solution is this firm acting efficiently? If so, explain how you can tell? If not explain why not and how they should they modify their choices to produce efficiently?