I feel that the theme in these lines has something to do with law, ruling, listening, obeying and being in charge.
A few quote examples to help support this theme is/are: "...girls usually side with their mother...."
"...her authority in the home shrank as my mother's authority gradually extended..."
"... the law of life..."
"...obey the law readily and willingly."
1) We, through e-mail, asked Ahmad to notify us if he was not coming.
Hope this helps! :)
A) 416=80+4x
B) 416=80+4x
336=4x
84=x
Mr. Harrison can buy a maximum of 84 books for his new bookshelf.
For the group would not a prepositional phrase im pretty sure