Answer:
k = 29 is the answer.
Explanation:
Since we know that sum of all angles on a straight line is 180°
Since two angles on the given line are (5k - 3) and (9 + k)
Therefore sum of these two angles is 180°
So (5k - 3) + (9 + k ) = 180°
6k + 6 = 180
6k = 180 - 6 = 174
k = 174/6 = 29
Therefore option B. k = 29 is the answer.