Answer:
D: 6x - 27
Explanation:
1. Distribute
2. Combine like terms
3. You will get your final answer
-9(x + 3) = -9x - 27
-9(x) = -9x
-9(3) = -27
-9x - 27 + 15x
-9x and 15x are like terms. So add them
-9x + 15x = 6x
So your final answer is 6x - 27.
Hope it helped!