Me with all questions quick
questions 1-5

1. is C because it says sum, which means add. 
2. is B because we had to add 6+3 to make it equal
3. We can input 6 into h and get 19, when used with the rule of PEMDAS.
4. For perimeter we just have to add all sides, the answer is 128.
5. We have to multiply that by 4 to get the perimeter. Answer is 76.