William bought some tickets to see his favorite singer. he bought some adult tickets and some children tickets, for a total of 15 tickets. the adult's tickets cost $30 per ticket and the children's tickets cost $20 per ticket. if he spent $330 then how many adults and children's tickets did he buy? do it step by step

What is the equation in point slope form of the line that passes through the point (-1, -3) and has a slope of 4? y-1=4(x-3) or y+3=4(x+1)

Which recursive formula can be used to determine the total amount of money earned in any year based on the amount earned in the previous year? f(n+1)=f(n)+5

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?