It takes juwan exactly 35 minutes by car to get t his grandmother's. the nearest parking area is a 4-minute walk from her apartment. one week, he realized that he spent 5 hours and 12 minutes traveling to her apartment and then back home. how many round trips did he make to visit his grandmother?

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?