Answer:
3. 0.625
4. 0.364
7. 1.083
8. 4.286
11. 1.1
12. 0.08
Explanation:
i did my best, sorry if its wrong :)
3: 0.625
4: 2.2
7: 1.083
8: 4.285
11: 1.1
12: 0.08
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