ANSWER
The total length of the trip to and from work in August is
EXPLANATION
The total length of the trip to and from work is
If Jonah worked 21 days in August,
Then, the total length of the trip to and from work is
Change the decimal to fraction and multiply,
Convert back to decimal
The reason why the bulletin board notice feel nervous is: it was under a tack
In most common cases, the notice that is putted under a tack is intended to be displayed on the board for a pretty long time, highlighting the importance and the urgeny of the notice.
fifty five hundredths is equal to 0.55
7.5 would be my best guess