Answer:
-12t + 21
Step-by-step explanation:
9-4(3t-3)
In order to get rid of the parenthesis you must take -4 and multiply it by the number(s) inside the parenthesis
So, -4 times 3t equals -12t and -4 times -3 equals +12
9-12t+12
Combine like terms
-12t + 21
Hope this helps!
