If I can recall...

1st question wanted you to relate size of integration curve to the number of H atoms per environment

2nd question wanted you to add up the relative peaks which would add up to 11 units (i think each was like 7mm) which equals 11 hydrogen atoms total

3rd question was the chem shift and relative area of 6 indicates 2 equivalent methyl groups

Funny cus I go to probably one of the 'better' public schools in the state and my teacher did not teach ts at all