The weekly demand for a video game is given by 360 P + 1500 where x is the number of thousands of x - 6 O video games produced and sold, and p is in dollars. Using the marginal revenue function R' (a), approximate the marginal revenue when 12,000 video games have been produced and sold. O $1,590 O $1,565 O $1,440 $1,490 O $1,640