The answer is 3X + 12 because in he distributive property you must multiply both the 3X and the 4 by 3
3x1=3 hence the 3X
and 3x4 = 12 <span />
Answer:
8
Step-by-step explanation:

Add 1/2 to both sides.



Answer:
Not sure what number sense is, but 3 is the answer.
Step-by-step explanation: