Answers:
5) product is 
6) product is 
7) product is 
8) product is 
9) product is 
=============================================
Explanation:
For each of these questions, you'll multiply the term outside by each term inside the parenthesis. I'm using the distributive property.
In problem 5, we multiply the outer 7a by the following terms inside like so

The other problems will have similar steps.
--------
A useful rule to keep in mind is that 
For example, 
Answer: b #4
Step-by-step explanation:
This would be +2 so I believe it would be B.
Answer:
34
Step-by-step explanation:
8/2 = 4
6 times 5 = 30
4 + 30 = 34