Question

Can someone help with all? I don't understand.

Answer 1

Question 4 

4(2x +5)

What you are going to do is called the distributive property.
First you are going to multiply the 4 and the 2 and you would get 8x.
Second you are going to multiply the 4 and the 5 and you would get 20.
Answer is 8x+20.

Sorry don't know about the other following answers 

Answer 2

4. F

5. A

6. i cant see the answer choices but the answer is 90

8. C

9. H