Which always share the properties of parallel lines?

A. the intersection of a wall and ceiling

B. the front edges of horizontal shelves in a bookshelf

C. the hands of a clock

D. the top and side edge of a window

Anew shopping mall is gaining in popularity. every day since it opened, the number of shoppers is 5% more than the number of shoppers the day before. the total number of shoppers over the first 10 days is 1258 how many shoppers were on the first day?