Number i cant figure out the proof to explain the parallels

Subtract 8 1/6 - 4 5/6 . simplify the answer and write as a mixed number.

Marlow is comparing the prices of two trucks rental compaines company a charges $3 per hour and an addtional $75 as serivce charges company b charges $2 per hour and an additional $85 as serivce charges

Which measure is equivalent to 110 ml? 0.0110 l 0.110 l 1.10 l 11,000 l