PLZZZ help me i need help asap plzz this is hard

Can someone answer these problems for me

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 5x^2 + 10x

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?