Allison rents a musical instrument. This graph shows the cost to rent the instrument for different lengths of time. How can Allison show that the slope is constant and what that constant slope shows in this situation. Chose one option from each drop-down menu to answer the question.

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?