I believe the answers to the sections of question 2 are:
A. "We" is who needs the umbrellas.
B. "Them" is the pronoun that replaces "umbrellas".
I think Lady Macbeth wasn't involved at all because Macbeth does not tell her. Also, Macbeth does not want to keep her worried. So Macbeth says "Be innocent of the knowledge, dearest chuck, / Till thou applaud the deed.". This means that Macbeth is telling Lady Macbeth to digest the deed about Duncan first. This is what i remember its been a while since i read the book. But hope this helps.
Sara paid for 4 hours to have the bike checked out
<em><u>Solution:</u></em>
Oceanside bike rental shop charges 17 dollars plus 9 dollars an hour for renting a bike
Let "x" be the number of hours rented
Then, total cost is 17 dollars plus 9 dollars for "x" hours
<em><u>Thus, we frame a equation as:</u></em>
Total cost = 17 + 9(number of years)
Total cost = 17 + 9x
<em><u>Sara paid 53 dollars to rent a bike</u></em>
Therefore, total cost = 53
Thus sara paid for 4 hours to have the bike checked out