I haven't been in school for a few days and I don't rlly understand range, but I need the answer as soon as possible or my mum's gonna ground me, i'll mark brainliest​

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.