Juan, Manuel, Carlos y cinco amigos más participan en una carrera. ¿De cuántas maneras diferentes pueden llegar a la meta, de tal manera que carlos llegue antes que manuel y este llegue antes que juan?

Delbert keeps track of total of the total number of points he earns on homework assignments, each of which is worth 60 points. at the end of the semester he has 810 points. write an equation for delbert’s average homework score a in terms of the number of assignments n.