Choose the answer that best represents the situation described below. casey is taking pictures outdoors. she knows that the later in the afternoon she takes a picture, the longer the subject's shadow will be. a. the time of day is a function of the length of the shadow. b. the length of the shadow is a function of the time of day. c. the need for a flash is a function of the time of day.

Me with this assignment ! i only partially understand, so explain. also it's a work sample. at the championship bike race, steve and paula were fighting for first place. steve was 175 feet ahead of paula and had only 300 feet left to go. he was very tired and was going only 9 feet per second. paula was desperate to catch up and was going 15 feet per second. who won the bike race and by how far did she/he win?