Hannah borrow $30 from her parents. Each week she pays them back the same amount. The total amount she owes her parents after weeks 0,1,2,3 and four are $30, $25, $20, $15, and $10

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.