Hello i need on this one and giving away points+ brainiest on the legit answer !

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.

Convert the mixed numbers into improper fractions. convert the improper fraction to mixed numbers.

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.