Answer:
(72, 297)
Step-by-step explanation:
1/3v = (-12/3, 15/3) = (-4, 5)
4w = (3(4), 7(4)) = (12, 28)
The sum of these two is (12 - 4, 5 + 28) = (8, 33)
9 times this vector is (8(9), 33(9)) = (72, 297)
option A is the right answer
