The answer to the first question is 30.
Answer:

Step-by-step explanation:
<u>Step 1: Find the square root of -1</u>
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Answer: 
Aruthmetic sequene is
an=a1+(n-1)d
where d=common difference between terms
adds 6 every time
d=6
first term is 8
a1=8
8+6(n-1)
distribute
8+6n-6
8-6+6n
2+6n is answer
It can be the last one, 827 over 1120
Hope that helps