I think it is -3/4 im pretty sure
The product of 70 and 6000 is 420,000.
The first one is 4/3
We can solve by,



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The second one is 35.
Idk how to explain...
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The third one is a 6 - gon therefore cannot be C or D.
I'd say the third one is A., it looks like it's caving in.