Sylvia is somewhat dissatisfied with her friendship with sarah, in part because sarah has been depressed a lot lately and isn't as much fun to be around anymore. sylvia maintains her friendship with sarah in spite of these reservations, in part because she feels that over the years she has known sarah, sarah has been there when sylvia needed her and they have a lot of history together. according to social exchange theory, which of the following best explains why sylvia continues to be friends with sarah?

you didn't list the options but im guessing it's resolving contradictions

not concrete, existing in thought or as an idea but not having a physical or concrete existence

journalism is the gathering, organizing, and distribution of news -- to include feature stories and commentary -- through the wide variety of print and non-print media outlets. it is not a recent phenomenon, by any means; the earliest reference to a journalistic product comes from rome circa 59 b.c., when news was recorded in a circular called the acta diurna. it enjoyed daily publication and was hung strategically throughout the city for all to read, or for those who were able to read.

at hatfield elementary school, there are 504 students in 7 classes. each class has the same number of students. what is a good estimate of the number of students in each class?