Answer:
c and d
Step-by-step explanation:
Answer:
72
Step-by-step explanation:
-3(x+5)=-9
-3x-15=-9
+15 +15
-3x=6
-1x=2
1x=-2
x=-2
Answer:
Cube C
Step-by-step explanation:

Be careful you don't add unlike terms together (e.g. x^2 and x cannot be added or subtracted together).
<span>Be careful you don't mistake the 2 in x^2 as another number. Same for x^3, x^4. etc.</span>