I didn't understand it can someone please help!

Ann and betty together have $60 ann has $9 more than twice betty’s amount how much money dose each have

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.

Aramp rises 4 feet over a distance of 10 feet. what is the length of the ramp?