7 of 10 7 of 10 Items Question Note: Figure not drawn to scale. In the above figure, m∠AOC = 21° and m∠BOD = (2x + 39)°. If ∠AOC and ∠BOD are vertical angles, what is the value of x? (2 points) Responses x = 30 x = 30 x = 60 x = 60 x = -18 x = -18 x = -9
