I need 5 questions answered!! PLEASE!

1. Is the expression 5x + 7 - 2x equivalent to 5x - 2x + 7?


2. What property can be used to say that 12x + 3 is equivalent to 3(4x +1)?


3. Use the associative property to simplify the following expression:
(2x + 3y) + 5y

4. Which expression is equivalent to 5(4x + 3) - 2
A. 18x + 15
B. 18x + 3
C. 7x + 8
D. 2x +8

I WILL ADD QUESTION 5 TO THE COMMENTS!