I can help with 5 - 7.
5. 19.6 (Rounds up to 20.)
6. 56.7 (Rounds up to 57.)
7. 9.86 (Rounds up to 10.)
Sorry I couldn't help with more.
I hope this does help.
Answer:
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Substitue w for 1/9 and you'll get 1/2 (1/9) +2. Multiply 1/2 by 1/9 and the equation will be 1/18 + 2. The answer will be 2 1/18
26 because when 2 meets 6 it forms the number aka # 26